{ "data": { "a": { "slug": "ai-diagram-maker-mcp", "name": "AI Diagram Maker MCP", "vendor": "AI Diagram Maker (Rajasekar Elango)", "vendorUrl": "https://www.aidiagrammaker.com", "kind": "mcp", "category": "diagramming", "summary": "AI Diagram Maker MCP is an MIT-licensed MCP server, hosted or run with npx, that sends text, JSON, ASCII art, images or Mermaid to the AI Diagram Maker service and returns a D2 software diagram with an edit link.", "url": "https://www.anchorterminal.com/tools/ai-diagram-maker-mcp", "markdownUrl": "https://www.anchorterminal.com/tools/ai-diagram-maker-mcp.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ai-diagram-maker-mcp.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ai-diagram-maker-mcp.json", "dns": "ai-diagram-maker-mcp.grade.anchorterminal.com", "repo": "https://github.com/erajasekar/ai-diagram-maker-mcp", "license": "MIT for the MCP server. The AI Diagram Maker service it calls is closed, under terms last updated 24 September 2025", "transports": [ "streamable-http", "stdio" ], "remoteUrl": "https://mcp.aidiagrammaker.com/mcp", "packages": [ { "registry": "npm", "name": "ai-diagram-maker-mcp" } ], "auth": "api-key", "authNotes": "An API key created in the AI Diagram Maker app under Settings \u003e API Keys, shown once, named, and deactivated, reactivated or deleted from the same page. No scopes; the user guide says anyone with the key can access the account. The hosted server takes it in `X-ADM-API-Key` or `Authorization: Bearer`, the local server in `ADM_API_KEY`. No OAuth.", "pricing": "freemium", "pricingNotes": "Basic is free with 50 AI credits a month. Plus $10 a month ($96 a year) with 250 credits, Max $20 a month ($192 a year) with 500. One credit is 1,000 tokens, and extra credits can't be bought. Which plans include API and MCP use isn't stated.", "priceSummary": "$10 / mo", "where": "both", "x402": { "level": "no", "evidence": "Plans sold through Lemon Squeezy checkout links. No x402, MPP or L402 in the repository, the OpenAPI file or the site (checked 2026-11-06). Out of credits returns 402 with no payment requirements.", "endpoints": [] }, "toolCount": 5, "popularity": { "githubStars": null, "npmWeekly": 63, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://github.com/erajasekar/ai-diagram-maker-mcp#readme", "openapi": "https://github.com/erajasekar/ai-diagram-maker-mcp/blob/main/apispec/adm-openapi.json", "registryName": "io.github.erajasekar/ai-diagram-maker-mcp", "capabilities": [ "diagram.create", "diagram.architecture", "diagram.as-code", "diagram.export" ], "tags": [ "hosted", "local", "mcp", "remote-mcp", "stdio", "mcp-registry", "openapi", "api-key", "freemium", "d2", "mcp-apps" ], "lastRelease": "2026-04-10", "graded": true, "anchor": { "graded": true, "score": 43.8, "grade": "E", "agentReady": false, "rank": 1225, "ranked": true, "rankOf": 1486, "categoryRank": 13, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 17, "payments": 20, "reliability": 30, "schema": 75, "security": 45, "transparency": 35 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Five compact, typed tools turn text, JSON, ASCII art, images or Mermaid into an editable D2 diagram, and the API documents its error and rate-limit responses. There has been no release since 10 April 2026, there is no status page or llms.txt, and the API key opens the whole account with no scopes.", "bestFor": "Quick architecture, sequence, ERD and flowchart diagrams from a coding agent, with a link to edit them.", "strengths": [ "Five tools with zod schemas, a diagramType enum and descriptions that say when to use each", "OpenAPI 3 file for the generate endpoint with documented 402, 422 and 429 responses", "A 429 body gives limit, remaining, resetAt and retryAfter", "Hosted endpoint with nothing to install, or a local npx server", "Output stays editable as D2 in the app and exports to SVG, PNG or Mermaid" ], "weaknesses": [ "Last release 3.0.8 on 10 April 2026, and the registry entry still says 1.0.0", "No status page, SLA, llms.txt, changelog or security policy found", "API keys have no scopes and give full account access", "Plans don't say whether API and MCP calls are included, and an open issue asks how hosted MCP credits are counted", "The privacy policy names no AI model providers or other processors" ], "agentNotes": [ "Send the key in the `X-ADM-API-Key` header to https://mcp.aidiagrammaker.com/mcp, never in the URL", "Pick `diagramType` from the enum when the user names one; leave it out to let the service choose", "On a 402 stop and tell the user credits are gone; they reset monthly and can't be topped up", "On a 429 wait for `retryAfter` seconds before the next call", "Give the user the returned diagram link so they can edit it, since the tools can't revise an existing diagram" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 43.8 } ], "editorialScores": { "ergonomics": 66, "maintenance": 17, "payments": 20, "reliability": 30, "schema": 75, "security": 45, "transparency": 28 }, "provenanceScore": 42, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "ADM_API_KEY=your_api_key npx ai-diagram-maker-mcp@latest", "claudeCode": "claude mcp add ai-diagram-maker -t stdio -e ADM_API_KEY=\u003capi_key\u003e -- npx -y ai-diagram-maker-mcp@latest", "config": { "mcpServers": { "ai-diagram-maker": { "headers": { "X-ADM-API-Key": "YOUR_API_KEY" }, "url": "https://mcp.aidiagrammaker.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/diagram.create", "tool": "https://letme.dev/ai-diagram-maker-mcp" }, "area": "design-diagrams", "unitPrices": [ { "item": "Plus plan", "unit": "month", "usd": 10, "note": "250 AI credits a month; $96 billed yearly" }, { "item": "Max plan", "unit": "month", "usd": 20, "note": "500 AI credits a month; $192 billed yearly" } ], "provenance": { "legalEntity": "", "domain": "aidiagrammaker.com", "domainRegistered": "2025-08-21", "endpointOnVendorDomain": true, "terms": "https://www.aidiagrammaker.com/terms", "privacy": "https://www.aidiagrammaker.com/privacy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The terms and privacy policy, both last updated 24 September 2025, name the company only as AI Diagram Maker, under United States law, with aidiagrammaker@gmail.com as the contact. The npm package names Rajasekar Elango as author.", "The terms list scraping among prohibited uses. Public pages were read as data.", "www.aidiagrammaker.com/robots.txt allows all paths.", "RDAP gives aidiagrammaker.com a registration date of 21 August 2025.", "/.well-known/security.txt returns 404. No status page or changelog found; the GitHub releases are the only dated record." ], "score": 42 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/ai-diagram-maker-mcp.json", "live": { "slug": "ai-diagram-maker-mcp", "probe": { "target": "https://mcp.aidiagrammaker.com/mcp", "method": "mcp-initialize", "lastAt": "2026-11-07T18:20:09.018580127Z", "lastOk": false, "lastStatus": 0, "lastMs": 0, "lastNote": "TLS certificate problem", "authRequired": false, "uptime24h": 0, "uptime30d": 0, "p50ms24h": 0, "p95ms24h": 0, "samples24h": 200, "samples30d": 200, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 0 }, { "date": "2026-11-07", "probes": 187, "ok": 0 } ], "outages": [ { "start": "2026-11-06T22:45:03.399368446Z", "end": "0001-01-01T00:00:00Z", "note": "TLS certificate problem" } ] }, "versions": [ { "registry": "mcp-registry", "name": "io.github.erajasekar/ai-diagram-maker-mcp", "version": "1.0.0", "seenAt": "2026-11-07T18:16:28.95801333Z" }, { "registry": "npm", "name": "ai-diagram-maker-mcp", "version": "3.0.8", "seenAt": "2026-11-06T23:04:20.113009064Z" } ], "githubStars": 10, "npmWeekly": 63, "securityTxt": { "url": "https://aidiagrammaker.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:48.542497373Z" }, "pages": [ { "url": "https://www.aidiagrammaker.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:24:25.783359417Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "40a879ba4963" }, { "url": "https://www.aidiagrammaker.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:24:27.95923952Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9b4e6f213ed0" } ], "mcpTools": { "url": "https://mcp.aidiagrammaker.com/mcp", "checkedAt": "2026-11-07T01:42:20.967941233Z", "status": "error", "note": "Post \"https://mcp.aidiagrammaker.com/mcp\": tls: failed to verify certificate: x509: certificate is valid for *.up.railway.app, up.railway.app, not mcp.aidiagrammaker.com", "changedAt": "2026-11-07T01:42:20.967941233Z" }, "updatedAt": "2026-11-07T18:20:09.018580127Z" } }, "answer": "AI Diagram Maker MCP scores 43.8 (E) on agent readiness against Mumble's 8.1 (F), and leads in 6 of 7 scored categories. Mumble leads on payments \u0026 pricing.", "b": { "slug": "mumble", "name": "Mumble", "vendor": "tiny space", "vendorUrl": "https://www.tinyspace.ai", "kind": "platform", "category": "diagramming", "summary": "Mumble is a macOS app from tiny space that transcribes a conversation on the Mac and draws a diagram as people talk, linking each box to the words behind it. It is in beta behind an early-access waitlist.", "url": "https://www.anchorterminal.com/tools/mumble", "markdownUrl": "https://www.anchorterminal.com/tools/mumble.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mumble.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mumble.json", "dns": "mumble.grade.anchorterminal.com", "license": "No licence, terms of use or source repository was found on tinyspace.ai or GitHub (checked 2026-10-14). The app and the `mumble-mcp` binary are not published as open source", "transports": [], "packages": [], "auth": "none", "authNotes": "No credential exists for an outside agent, since neither the app nor `mumble-mcp` can be downloaded publicly. Per the docs, `mumble-mcp` is a local stdio binary that needs no API key and is bounded by the folder path passed at start. The AI functions run through the person's own signed-in Claude Code or Codex, and Mumble never asks for or stores an API key (https://www.tinyspace.ai/mumble/docs, checked 2026-10-14).", "pricing": "byo-plan", "pricingNotes": "Free while Mumble is in beta, and local use on the Mac is stated to stay free after the beta. The live map runs on the person's own Claude Code or Codex plan, so its cost is that plan's allowance. Transcription-only mode needs neither. Two paid plans, Private (one-off price) and Team (monthly), are marked coming soon with no price published (https://www.tinyspace.ai/mumble#pricing, checked 2026-10-14).", "priceSummary": "Your plan", "where": "local", "x402": { "level": "no", "evidence": "Local app and local stdio MCP server with no payments. No x402, MPP or L402 on the Mumble pages, docs or llms.txt (checked 2026-10-14).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-14" }, "docsUrl": "https://www.tinyspace.ai/mumble/docs", "llmsTxt": "https://www.tinyspace.ai/llms.txt", "capabilities": [ "diagram.create", "diagram.edit", "diagram.architecture", "diagram.export", "meetings.recording", "meetings.transcript", "meetings.summary", "speech.stt" ], "tags": [ "official", "local", "desktop", "macos", "byo-plan", "beta", "waitlist", "not-for-agents", "closed-source", "llms-txt", "no-status-page" ], "graded": true, "own": true, "disclosure": "Mumble is made by tiny space, the company of Quynh Tran-Thanh, a founder of Anchor Terminal. It's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it.", "anchor": { "graded": true, "score": 8.1, "grade": "F", "agentReady": false, "rank": 1478, "ranked": true, "rankOf": 1486, "categoryRank": 18, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 0, "maintenance": 0, "payments": 30, "reliability": 5, "schema": 10, "security": 0, "transparency": 20 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-14" }, "negative": 0, "verdict": "Mumble keeps audio on the Mac and stores each conversation as plain files in ~/Mumble, with canvas JSON that diffs cleanly. There is no API or MCP server an outside agent can call today. The documented `mumble-mcp` has no public download, package or repository, and the app is reached only through an early-access waitlist.", "bestFor": "A person on a Mac with early access who wants a live, transcript-linked diagram of a call or workshop, kept as plain files in git, and who already pays for Claude Code or Codex.", "disclosure": "Mumble is made by tiny space, the company of Quynh Tran-Thanh, a founder of Anchor Terminal. It's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it.", "strengths": [ "Audio is transcribed on the Mac with whisper.cpp and, per tiny space, never uploaded. Transcription-only mode sends nothing to an AI provider", "Each conversation is a folder of plain files in ~/Mumble, and canvas JSON is serialised deterministically with stable node ids, so edits show as small diffs", "Every box links to the transcript passage behind it, and items the person didn't ask for are drawn as proposals to accept or reject", "AI functions run on the person's own Claude Code or Codex account, and Mumble says it never asks for or stores an API key", "Free during the beta, and local use on the Mac is stated to stay free after it" ], "weaknesses": [ "No API or MCP server an outside agent can call. The documented `mumble-mcp` binary has no public download, package or repository (checked 14 October 2026)", "Access is an early-access waitlist with email confirmation, and no download of the app was found", "No terms of use, privacy policy, legal entity, changelog or security.txt was found on tinyspace.ai", "Transcript text and map context go to the person's Claude Code or Codex provider whenever AI functions are on", "English only, with no speaker labels and no shared editing, and Mac only (macOS 13 or later)" ], "agentNotes": [ "Don't plan to call Mumble from another agent. Neither the app nor `mumble-mcp` can be obtained publicly, so hand the task to a person with early access", "Don't configure `/path/to/mumble-mcp` from the docs. It is a placeholder, and no binary is published", "If the person already has Mumble, read ~/Mumble/\u003ccapture\u003e/ directly, `capture.json` for the transcript and `diagram.canvas` for the map", "Keep canvas keys in schema order and never rename a node id, or the edges that name it are orphaned and the canvas is refused. Use git as the undo", "Don't write to a capture that is being recorded. The app doesn't merge the two versions" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 1.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "F", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 8.1 } ], "editorialScores": { "ergonomics": 0, "maintenance": 0, "payments": 30, "reliability": 5, "schema": 10, "security": 0, "transparency": 10 }, "provenanceScore": 29, "checked": { "categories": { "ergonomics": "2026-10-14", "maintenance": "2026-10-14", "payments": "2026-10-14", "reliability": "2026-10-14", "schema": "2026-10-14", "security": "2026-10-14", "transparency": "2026-10-14" }, "last": "2026-10-14", "lastMoved": "2026-10-27", "oldest": "2026-10-14", "stale": false, "staleAfterDays": 90 } }, "letme": { "capability": "https://letme.dev/diagram.create" }, "area": "design-diagrams", "unitPrices": [ { "item": "Beta", "unit": "month", "usd": 0, "note": "free during the beta. AI functions use the person's own Claude Code or Codex plan" } ], "provenance": { "legalEntity": "", "domain": "tinyspace.ai", "domainRegistered": "2026-07-02", "endpointOnVendorDomain": null, "terms": "", "privacy": "https://www.tinyspace.ai/mumble/privacy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-14", "notes": [ "The site names the maker only as \"tiny space, an independent product lab\". No legal entity, company number or address was found on any page in the sitemap.", "No terms of use or legal privacy policy was found. /terms, /privacy, /mumble/terms and /mumble/pricing return 404. The privacy link is a data-flow page, \"What leaves your Mac\", with no controller named.", "RDAP for tinyspace.ai gives a registration date of 2026-07-02 through Cloudflare Registrar, with the registrant country GB and other registrant data redacted.", "www.tinyspace.ai/.well-known/security.txt returns 404.", "robots.txt allows all paths except /api/ and /confirmed. Neither was fetched.", "No GitHub repository for Mumble or `mumble-mcp` was found through GitHub search, and neither `@mumble/core` nor `mumble-mcp` is on npm." ], "score": 29 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mumble.json", "live": { "slug": "mumble", "securityTxt": { "url": "https://tinyspace.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:05.082058674Z" }, "llmsTxt": { "url": "https://www.tinyspace.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:14.968058641Z" }, "domain": { "domain": "tinyspace.ai", "registered": "2026-07-02", "source": "https://rdap.identitydigital.services/rdap/domain/tinyspace.ai", "checkedAt": "2026-11-01T14:14:30.211484037Z" }, "pages": [ { "url": "https://www.tinyspace.ai/mumble", "kind": "pricing", "status": 304, "checkedAt": "2026-11-07T14:35:42.977463426Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "60045050cf24" }, { "url": "https://www.tinyspace.ai/mumble/privacy", "kind": "privacy", "status": 304, "checkedAt": "2026-11-07T14:35:45.11075718Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5969b7ce2cf7" } ], "updatedAt": "2026-11-07T16:00:05.082058674Z" } }, "edges": [ { "by": 66, "category": "ergonomics", "leads": "ai-diagram-maker-mcp", "name": "Agent ergonomics", "reasons": { "a": "Five compact tools (25). Output can be SVG or PNG and the API can return the D2 source with `debug`, but there's nothing to page or trim, and results carry the rendered image (10 of 20). Typed error bodies with codes, a 422 that returns the failing D2 code, and retryAfter on 429 (16 of 20). No readOnlyHint or other annotations in the source and no idempotency key, and every call spends credits (5 of 20). Only `content` is required and the hosted endpoint needs no install, but there is no SDK beyond the server (10 of 15). 25 + 10 + 16 + 5 + 10 = 66.", "b": "Graded on the interface an outside agent can use. Mumble has none that can be obtained today, so context cost, pagination, errors, retries and defaults score nothing (0 on each line). For the record, the docs list 15 tools in capture mode and two more with `--refine`, prefer the batch `add_nodes`, return errors as values such as `{\"ok\": false, \"error\": \"no node bata\"}` and have no undo tool, recommending git instead." }, "scores": { "a": 66, "b": 0 } }, { "by": 65, "category": "schema", "leads": "ai-diagram-maker-mcp", "name": "Schema \u0026 documentation", "reasons": { "a": "All five tools have zod input schemas in src/tools, and the repository ships an OpenAPI 3 file for POST /api/v2/diagrams/generate (25). No llms.txt (404) and no docs site for agents beyond the README (0). Each description says what the tool does and when to use it, listing trigger phrases and the diagram types, without saying when another tool fits better (16 of 20). `content` has a minimum length and `diagramType` an eight-value enum; the OpenAPI adds `inputType` and `format` enums (13 of 15). Examples in the parameter descriptions and README, and the OpenAPI documents 400, 401, 402, 422 (D2 failed to compile) and 429 with typed error bodies (13 of 15). Git tags from v1.1.1 to v3.0.8 and a /api/v2 path, with no changelog or release notes (8 of 15). 25 + 0 + 16 + 13 + 13 + 8 = 75.", "b": "Graded on the interface an outside agent can use, which is none, the reading used for every listing without one. The docs page describes 17 MCP tools in two modes with one-line purposes, a worked example and errors returned as values, but the binary isn't publicly available and its tool definitions can't be read, so the contract, description, typed-input and example lines score nothing (0 of 25, 0 of 20, 0 of 15, 0 of 15). tinyspace.ai/llms.txt describes the product, privacy boundaries, availability and pricing in Markdown (10). No version or changelog for the tools (0 of 15)." }, "scores": { "a": 75, "b": 10 } }, { "by": 45, "category": "security", "leads": "ai-diagram-maker-mcp", "name": "Security \u0026 auth", "reasons": { "a": "Several named API keys per account, shown once and deactivated or deleted in Settings with a confirmation step, sent in a header, never a query string. No scopes, and the user guide says anyone with a key can access the account (20 of 30). The tools only create diagrams and can't change or delete anything in the account, but there's no read-only key (12 of 20). Tools return diagrams built from the caller's own input. Image inputs can be any public URL (10 of 15). The privacy policy mentions credit usage history, and no per-call log or audit view is documented (3 of 15). No security.txt, disclosure policy, bug bounty or certification found (0). 20 + 12 + 10 + 3 + 0 = 45.", "b": "Graded on the interface an outside agent can use. With none that can be obtained, the credential, least-privilege, injection and audit lines score nothing (0 of 30, 0 of 20, 0 of 15, 0 of 15). For the record, the docs say `mumble-mcp` needs no key and no network of its own and treats its start path as a boundary that `..` and symlinks can't leave, and the transcripts it would return are untrusted speech with no injection guidance found. The security programme line doesn't need an interface and is scored. security.txt returns 404 on www.tinyspace.ai, and no disclosure policy, bug bounty or certification was found (0 of 20)." }, "scores": { "a": 45, "b": 0 } }, { "by": 25, "category": "reliability", "leads": "ai-diagram-maker-mcp", "name": "Reliability", "reasons": { "a": "Hosted lines, because every tool call is generated on the AI Diagram Maker service, through the hosted endpoint or the npx server. No status page found on the site or in the README (0). No readable incident history (5). The only rate-limit number is the example in the OpenAPI 429 schema ('Maximum 100 requests per day exceeded.'), which isn't stated as the limit (5 of 15). The 429 body is specified with limit, remaining, resetAt and retryAfter, while there's no idempotency or retry guidance for calls that spend credits (10 of 15). No SLA found (0). Nothing labels the service or server beta (10). 0 + 5 + 5 + 10 + 0 + 10 = 30.", "b": "Graded on no interface. The docs describe a local MCP server, `mumble-mcp`, but no download, package or repository for it or for the app was found on 14 October 2026, so an outside agent has nothing to call. Read with the local-software lines, since Mumble is a Mac app with no hosted service. No official package or public download, only an early-access waitlist, though macOS 13 or later is stated (0 of 20). No public CI or test suite (0 of 25). No public issue tracker, so nothing to count. Judgement call (5 of 25). No version number, release notes or changelog found (0 of 15). Labelled beta, with no version at or past 1.0 (0 of 15). The hosted lines give the same total, 5 for no readable history and 0 on the rest." }, "scores": { "a": 30, "b": 5 } }, { "by": 17, "category": "maintenance", "leads": "ai-diagram-maker-mcp", "name": "Maintenance \u0026 community", "reasons": { "a": "Last release v3.0.8, published to npm on 10 April 2026, 210 days before this check (0). No release since 8 August (0). Four issues in all. The two open ones, from 4 May (hosted MCP credit usage) and 13 October 2026, show no reply, and one closed issue had a comment (5 of 25). In the official MCP registry under the GitHub-verified namespace io.github.erajasekar, but the entry is 1.0.0 from 19 March 2026 while npm is on 3.0.8 (10 of 15). The only workflow publishes to the registry. No tests or CI, and the MCP SDK floor is ^1.9.0 (2 of 10). 0 + 0 + 5 + 10 + 2 = 17.", "b": "Read for a closed product. No release, version number, release note or dated changelog entry was found, and /mumble/changelog returns 404 (0 of 30, 0 of 20). No support address, issue tracker or community channel was found, only the waitlist form (0 of 15). No entry in the official MCP registry (a search for mumble returned none) and no SDK (0). No package or CI to judge, and `mumble-mcp` and `@mumble/core` are not on npm (0)." }, "scores": { "a": 17, "b": 0 } }, { "by": 15, "category": "transparency", "leads": "ai-diagram-maker-mcp", "name": "Transparency \u0026 trust", "reasons": { "a": "The MCP server is MIT (package.json and LICENSE, added 18 March 2026). The service is closed, under terms last updated 24 September 2025 that name the operator only as AI Diagram Maker (20 of 30). The privacy policy of the same date keeps diagrams, revisions and chat prompts and responses 'as long as necessary', and the terms license user input 'to provide and improve our services', with no retention periods and no word on model training or the AI providers used (8 of 30). No deprecation policy or dated notices (0). No subprocessors or data locations named (0). The MCP server's source sends no telemetry of its own. 20 + 8 + 0 + 0 = 28.", "b": "The editorial half. Closed source, and no terms of use or licence was found, with /terms and /mumble/terms returning 404 (0 of 30). The overview, FAQ, llms.txt and the \"What leaves your Mac\" page agree that audio is transcribed on the Mac and never uploaded, that the audio, transcript, map and vocabulary files stay in ~/Mumble, and that transcript text and map context go to the person's Claude Code or Codex provider only when AI functions are on. No privacy policy, named controller, retention period or deletion route was found, and nothing says how waitlist emails are handled (10 of 30). No deprecation policy or dated notices (0 of 20). No statement on analytics, crash reports or update checks from the app and no opt-out for them. Transcription-only mode is credited above (0 of 20). The provenance half is computed from the provenance block, which has no legal entity, terms, changelog or security.txt." }, "scores": { "a": 35, "b": 20 } } ], "facts": [ { "a": "MCP server", "b": "Platform", "name": "Kind" }, { "a": "AI Diagram Maker (Rajasekar Elango)", "b": "tiny space", "name": "Vendor" }, { "a": "https://mcp.aidiagrammaker.com/mcp", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "Streamable HTTP, stdio", "b": "", "name": "Transports" }, { "a": "API key", "b": "None", "name": "Auth" }, { "a": "Freemium", "b": "Your plan", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT for the MCP server. The AI Diagram Maker service it calls is closed, under terms last updated 24 September 2025", "b": "No licence, terms of use or source repository was found on tinyspace.ai or GitHub (checked 2026-10-14). The app and the `mumble-mcp` binary are not published as open source", "name": "Licence" }, { "a": "5", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "io.github.erajasekar/ai-diagram-maker-mcp", "b": "not listed", "name": "MCP registry" }, { "a": "2026-04-10", "b": "none", "name": "Last release" }, { "a": "2025-09-24", "b": "no document linked", "name": "Terms last updated" }, { "a": "2025-09-24", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not read yet", "name": "Customer content may train models" }, { "a": "yes", "b": "not read yet", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not read yet", "name": "Arbitration or class-action waiver" }, { "a": "63 npm/wk", "b": "none", "name": "Popularity" }, { "a": "none", "b": "1.5/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "AI Diagram Maker MCP scores 43.8 (E) on agent readiness against Mumble's 8.1 (F), and leads in 6 of 7 scored categories. Mumble leads on payments \u0026 pricing.", "question": "Which is better for AI agents, AI Diagram Maker MCP or Mumble?" }, { "answer": "AI Diagram Maker MCP has a hosted endpoint at https://mcp.aidiagrammaker.com/mcp. No hosted endpoint is listed for Mumble.", "question": "Can an agent call AI Diagram Maker MCP and Mumble without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 30 against 5", "Schema \u0026 documentation, 75 against 10", "Agent ergonomics, 66 against 0", "Security \u0026 auth, 45 against 0", "Maintenance \u0026 community, 17 against 0", "Transparency \u0026 trust, 35 against 20" ], "also": [ "A hosted endpoint, with nothing to install", "Runs on your own machine" ], "goodFor": "Quick architecture, sequence, ERD and flowchart diagrams from a coding agent, with a link to edit them.", "slug": "ai-diagram-maker-mcp", "watchFor": "Last release 3.0.8 on 10 April 2026, and the registry entry still says 1.0.0" }, { "aheadOn": [ "Payments \u0026 pricing, 30 against 20" ], "also": [ "No key needed to call it" ], "goodFor": "A person on a Mac with early access who wants a live, transcript-linked diagram of a call or workshop, kept as plain files in git, and who already pays for Claude Code or Codex.", "slug": "mumble", "watchFor": "No API or MCP server an outside agent can call. The documented `mumble-mcp` binary has no public download, package or repository (checked 14 October 2026)" } ], "history": { "ai-diagram-maker-mcp": null, "mumble": [ { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.6, "from": 7.5, "fromGrade": "F", "to": 8.1, "toGrade": "F" } ] }, "job": { "capability": "diagram.create", "name": "Diagram creation" }, "others": [ { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-cloudviz.json", "title": "AI Diagram Maker MCP vs Cloudviz API", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-cloudviz" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-d2.json", "title": "AI Diagram Maker MCP vs D2", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-d2" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-diagrams-so.json", "title": "AI Diagram Maker MCP vs Diagrams.so API + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-diagrams-so" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-drawio.json", "title": "AI Diagram Maker MCP vs draw.io + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-drawio" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-eraser.json", "title": "AI Diagram Maker MCP vs Eraser API + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-eraser" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excaliclaw.json", "title": "AI Diagram Maker MCP vs ExcaliClaw", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excaliclaw" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excalidraw.json", "title": "AI Diagram Maker MCP vs Excalidraw", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excalidraw" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-kroki.json", "title": "AI Diagram Maker MCP vs Kroki", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-kroki" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-lucid.json", "title": "AI Diagram Maker MCP vs Lucid API + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-lucid" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mermaid-chart.json", "title": "AI Diagram Maker MCP vs Mermaid Chart MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mermaid-chart" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mural-mcp.json", "title": "AI Diagram Maker MCP vs Mural MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mural-mcp" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-plantuml.json", "title": "AI Diagram Maker MCP vs PlantUML", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-plantuml" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-structurizr.json", "title": "AI Diagram Maker MCP vs Structurizr + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-structurizr" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw.json", "title": "AI Diagram Maker MCP vs tldraw SDK + MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw" }, { "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-whimsical.json", "title": "AI Diagram Maker MCP vs Whimsical MCP", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-whimsical" }, { "json": "https://www.anchorterminal.com/compare/cloudviz-vs-mumble.json", "title": "Cloudviz API vs Mumble", "url": "https://www.anchorterminal.com/compare/cloudviz-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/d2-vs-mumble.json", "title": "D2 vs Mumble", "url": "https://www.anchorterminal.com/compare/d2-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/diagrams-so-vs-mumble.json", "title": "Diagrams.so API + MCP vs Mumble", "url": "https://www.anchorterminal.com/compare/diagrams-so-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/drawio-vs-mumble.json", "title": "draw.io + MCP vs Mumble", "url": "https://www.anchorterminal.com/compare/drawio-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/eraser-vs-mumble.json", "title": "Eraser API + MCP vs Mumble", "url": "https://www.anchorterminal.com/compare/eraser-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/excaliclaw-vs-mumble.json", "title": "ExcaliClaw vs Mumble", "url": "https://www.anchorterminal.com/compare/excaliclaw-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/excalidraw-vs-mumble.json", "title": "Excalidraw vs Mumble", "url": "https://www.anchorterminal.com/compare/excalidraw-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/kroki-vs-mumble.json", "title": "Kroki vs Mumble", "url": "https://www.anchorterminal.com/compare/kroki-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/lucid-vs-mumble.json", "title": "Lucid API + MCP vs Mumble", "url": "https://www.anchorterminal.com/compare/lucid-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/mermaid-chart-vs-mumble.json", "title": "Mermaid Chart MCP vs Mumble", "url": "https://www.anchorterminal.com/compare/mermaid-chart-vs-mumble" }, { "json": "https://www.anchorterminal.com/compare/mumble-vs-mural-mcp.json", "title": "Mumble vs Mural MCP", "url": "https://www.anchorterminal.com/compare/mumble-vs-mural-mcp" }, { "json": "https://www.anchorterminal.com/compare/mumble-vs-plantuml.json", "title": "Mumble vs PlantUML", "url": "https://www.anchorterminal.com/compare/mumble-vs-plantuml" }, { "json": "https://www.anchorterminal.com/compare/mumble-vs-structurizr.json", "title": "Mumble vs Structurizr + MCP", "url": "https://www.anchorterminal.com/compare/mumble-vs-structurizr" }, { "json": "https://www.anchorterminal.com/compare/mumble-vs-tldraw.json", "title": "Mumble vs tldraw SDK + MCP", "url": "https://www.anchorterminal.com/compare/mumble-vs-tldraw" }, { "json": "https://www.anchorterminal.com/compare/mumble-vs-whimsical.json", "title": "Mumble vs Whimsical MCP", "url": "https://www.anchorterminal.com/compare/mumble-vs-whimsical" } ], "panel": null, "scores": [ { "ai-diagram-maker-mcp": 30, "by": 25, "edge": "ai-diagram-maker-mcp", "key": "reliability", "mumble": 5, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "ai-diagram-maker-mcp": 75, "by": 65, "edge": "ai-diagram-maker-mcp", "key": "schema", "mumble": 10, "name": "Schema \u0026 documentation", "weight": 13 }, { "ai-diagram-maker-mcp": 66, "by": 66, "edge": "ai-diagram-maker-mcp", "key": "ergonomics", "mumble": 0, "name": "Agent ergonomics", "weight": 13 }, { "ai-diagram-maker-mcp": 45, "by": 45, "edge": "ai-diagram-maker-mcp", "key": "security", "mumble": 0, "name": "Security \u0026 auth", "weight": 14 }, { "ai-diagram-maker-mcp": 20, "by": 10, "edge": "mumble", "key": "payments", "mumble": 30, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "ai-diagram-maker-mcp": 17, "by": 17, "edge": "ai-diagram-maker-mcp", "key": "maintenance", "mumble": 0, "name": "Maintenance \u0026 community", "weight": 7 }, { "ai-diagram-maker-mcp": 35, "by": 15, "edge": "ai-diagram-maker-mcp", "key": "transparency", "mumble": 20, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "AI Diagram Maker MCP scores 43.8 (E) on agent readiness against Mumble's 8.1 (F), and leads in 6 of 7 scored categories. Mumble leads on payments \u0026 pricing. Both do diagram creation.", "tasks": null, "tutorials": [], "verdicts": { "ai-diagram-maker-mcp": "Five compact, typed tools turn text, JSON, ASCII art, images or Mermaid into an editable D2 diagram, and the API documents its error and rate-limit responses. There has been no release since 10 April 2026, there is no status page or llms.txt, and the API key opens the whole account with no scopes.", "mumble": "Mumble keeps audio on the Mac and stores each conversation as plain files in ~/Mumble, with canvas JSON that diffs cleanly. There is no API or MCP server an outside agent can call today. The documented `mumble-mcp` has no public download, package or repository, and the app is reached only through an early-access waitlist." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble", "json": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble.min.md" }, "markdown": "AI Diagram Maker MCP scores 43.8 (E) on agent readiness against Mumble's 8.1 (F), and leads in 6 of 7 scored categories. Mumble leads on payments \u0026 pricing. Both do diagram creation.\n\n- AI Diagram Maker MCP: grade E, 43.8/100, rank #1225 of 1486. Markdown https://www.anchorterminal.com/tools/ai-diagram-maker-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/ai-diagram-maker-mcp.json\n- Mumble: grade F, 8.1/100, rank #1478 of 1486. Markdown https://www.anchorterminal.com/tools/mumble.md · JSON https://www.anchorterminal.com/api/v1/tools/mumble.json\n- Best diagramming APIs and diagram-as-code for AI agents: https://www.anchorterminal.com/best/diagramming/index.md\n- All 147 diagrams comparisons: https://www.anchorterminal.com/compare/diagramming/index.md\n\n## Which one, for what\n\n### AI Diagram Maker MCP (E)\n\nGood for: Quick architecture, sequence, ERD and flowchart diagrams from a coding agent, with a link to edit them.\n\nAhead on:\n- Reliability, 30 against 5\n- Schema \u0026 documentation, 75 against 10\n- Agent ergonomics, 66 against 0\n- Security \u0026 auth, 45 against 0\n- Maintenance \u0026 community, 17 against 0\n- Transparency \u0026 trust, 35 against 20\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Runs on your own machine\n\nWatch for: Last release 3.0.8 on 10 April 2026, and the registry entry still says 1.0.0\n\n### Mumble (F)\n\nGood for: A person on a Mac with early access who wants a live, transcript-linked diagram of a call or workshop, kept as plain files in git, and who already pays for Claude Code or Codex.\n\nAhead on:\n- Payments \u0026 pricing, 30 against 20\n\nAlso in its favour:\n- No key needed to call it\n\nWatch for: No API or MCP server an outside agent can call. The documented `mumble-mcp` binary has no public download, package or repository (checked 14 October 2026)\n\n\n## Why the edge\n\n### Agent ergonomics: AI Diagram Maker MCP +66\n\n- AI Diagram Maker MCP (66): Five compact tools (25). Output can be SVG or PNG and the API can return the D2 source with `debug`, but there's nothing to page or trim, and results carry the rendered image (10 of 20). Typed error bodies with codes, a 422 that returns the failing D2 code, and retryAfter on 429 (16 of 20). No readOnlyHint or other annotations in the source and no idempotency key, and every call spends credits (5 of 20). Only `content` is required and the hosted endpoint needs no install, but there is no SDK beyond the server (10 of 15). 25 + 10 + 16 + 5 + 10 = 66.\n- Mumble (0): Graded on the interface an outside agent can use. Mumble has none that can be obtained today, so context cost, pagination, errors, retries and defaults score nothing (0 on each line). For the record, the docs list 15 tools in capture mode and two more with `--refine`, prefer the batch `add_nodes`, return errors as values such as `{\"ok\": false, \"error\": \"no node bata\"}` and have no undo tool, recommending git instead.\n\n### Schema \u0026 documentation: AI Diagram Maker MCP +65\n\n- AI Diagram Maker MCP (75): All five tools have zod input schemas in src/tools, and the repository ships an OpenAPI 3 file for POST /api/v2/diagrams/generate (25). No llms.txt (404) and no docs site for agents beyond the README (0). Each description says what the tool does and when to use it, listing trigger phrases and the diagram types, without saying when another tool fits better (16 of 20). `content` has a minimum length and `diagramType` an eight-value enum; the OpenAPI adds `inputType` and `format` enums (13 of 15). Examples in the parameter descriptions and README, and the OpenAPI documents 400, 401, 402, 422 (D2 failed to compile) and 429 with typed error bodies (13 of 15). Git tags from v1.1.1 to v3.0.8 and a /api/v2 path, with no changelog or release notes (8 of 15). 25 + 0 + 16 + 13 + 13 + 8 = 75.\n- Mumble (10): Graded on the interface an outside agent can use, which is none, the reading used for every listing without one. The docs page describes 17 MCP tools in two modes with one-line purposes, a worked example and errors returned as values, but the binary isn't publicly available and its tool definitions can't be read, so the contract, description, typed-input and example lines score nothing (0 of 25, 0 of 20, 0 of 15, 0 of 15). tinyspace.ai/llms.txt describes the product, privacy boundaries, availability and pricing in Markdown (10). No version or changelog for the tools (0 of 15).\n\n### Security \u0026 auth: AI Diagram Maker MCP +45\n\n- AI Diagram Maker MCP (45): Several named API keys per account, shown once and deactivated or deleted in Settings with a confirmation step, sent in a header, never a query string. No scopes, and the user guide says anyone with a key can access the account (20 of 30). The tools only create diagrams and can't change or delete anything in the account, but there's no read-only key (12 of 20). Tools return diagrams built from the caller's own input. Image inputs can be any public URL (10 of 15). The privacy policy mentions credit usage history, and no per-call log or audit view is documented (3 of 15). No security.txt, disclosure policy, bug bounty or certification found (0). 20 + 12 + 10 + 3 + 0 = 45.\n- Mumble (0): Graded on the interface an outside agent can use. With none that can be obtained, the credential, least-privilege, injection and audit lines score nothing (0 of 30, 0 of 20, 0 of 15, 0 of 15). For the record, the docs say `mumble-mcp` needs no key and no network of its own and treats its start path as a boundary that `..` and symlinks can't leave, and the transcripts it would return are untrusted speech with no injection guidance found. The security programme line doesn't need an interface and is scored. security.txt returns 404 on www.tinyspace.ai, and no disclosure policy, bug bounty or certification was found (0 of 20).\n\n### Reliability: AI Diagram Maker MCP +25\n\n- AI Diagram Maker MCP (30): Hosted lines, because every tool call is generated on the AI Diagram Maker service, through the hosted endpoint or the npx server. No status page found on the site or in the README (0). No readable incident history (5). The only rate-limit number is the example in the OpenAPI 429 schema ('Maximum 100 requests per day exceeded.'), which isn't stated as the limit (5 of 15). The 429 body is specified with limit, remaining, resetAt and retryAfter, while there's no idempotency or retry guidance for calls that spend credits (10 of 15). No SLA found (0). Nothing labels the service or server beta (10). 0 + 5 + 5 + 10 + 0 + 10 = 30.\n- Mumble (5): Graded on no interface. The docs describe a local MCP server, `mumble-mcp`, but no download, package or repository for it or for the app was found on 14 October 2026, so an outside agent has nothing to call. Read with the local-software lines, since Mumble is a Mac app with no hosted service. No official package or public download, only an early-access waitlist, though macOS 13 or later is stated (0 of 20). No public CI or test suite (0 of 25). No public issue tracker, so nothing to count. Judgement call (5 of 25). No version number, release notes or changelog found (0 of 15). Labelled beta, with no version at or past 1.0 (0 of 15). The hosted lines give the same total, 5 for no readable history and 0 on the rest.\n\n### Maintenance \u0026 community: AI Diagram Maker MCP +17\n\n- AI Diagram Maker MCP (17): Last release v3.0.8, published to npm on 10 April 2026, 210 days before this check (0). No release since 8 August (0). Four issues in all. The two open ones, from 4 May (hosted MCP credit usage) and 13 October 2026, show no reply, and one closed issue had a comment (5 of 25). In the official MCP registry under the GitHub-verified namespace io.github.erajasekar, but the entry is 1.0.0 from 19 March 2026 while npm is on 3.0.8 (10 of 15). The only workflow publishes to the registry. No tests or CI, and the MCP SDK floor is ^1.9.0 (2 of 10). 0 + 0 + 5 + 10 + 2 = 17.\n- Mumble (0): Read for a closed product. No release, version number, release note or dated changelog entry was found, and /mumble/changelog returns 404 (0 of 30, 0 of 20). No support address, issue tracker or community channel was found, only the waitlist form (0 of 15). No entry in the official MCP registry (a search for mumble returned none) and no SDK (0). No package or CI to judge, and `mumble-mcp` and `@mumble/core` are not on npm (0).\n\n### Transparency \u0026 trust: AI Diagram Maker MCP +15\n\n- AI Diagram Maker MCP (35): The MCP server is MIT (package.json and LICENSE, added 18 March 2026). The service is closed, under terms last updated 24 September 2025 that name the operator only as AI Diagram Maker (20 of 30). The privacy policy of the same date keeps diagrams, revisions and chat prompts and responses 'as long as necessary', and the terms license user input 'to provide and improve our services', with no retention periods and no word on model training or the AI providers used (8 of 30). No deprecation policy or dated notices (0). No subprocessors or data locations named (0). The MCP server's source sends no telemetry of its own. 20 + 8 + 0 + 0 = 28.\n- Mumble (20): The editorial half. Closed source, and no terms of use or licence was found, with /terms and /mumble/terms returning 404 (0 of 30). The overview, FAQ, llms.txt and the \"What leaves your Mac\" page agree that audio is transcribed on the Mac and never uploaded, that the audio, transcript, map and vocabulary files stay in ~/Mumble, and that transcript text and map context go to the person's Claude Code or Codex provider only when AI functions are on. No privacy policy, named controller, retention period or deletion route was found, and nothing says how waitlist emails are handled (10 of 30). No deprecation policy or dated notices (0 of 20). No statement on analytics, crash reports or update checks from the app and no opt-out for them. Transcription-only mode is credited above (0 of 20). The provenance half is computed from the provenance block, which has no legal entity, terms, changelog or security.txt.\n\n## Score by category\n\n| Category | Weight | AI Diagram Maker MCP | Mumble | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 30 | 5 | AI Diagram Maker MCP +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 10 | AI Diagram Maker MCP +65 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 0 | AI Diagram Maker MCP +66 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 0 | AI Diagram Maker MCP +45 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | Mumble +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 17 | 0 | AI Diagram Maker MCP +17 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 35 | 20 | AI Diagram Maker MCP +15 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **43.8 · E** | **8.1 · F** | |\n\n## Facts side by side\n\n| Fact | AI Diagram Maker MCP | Mumble |\n| --- | --- | --- |\n| Kind | MCP server | Platform |\n| Vendor | AI Diagram Maker (Rajasekar Elango) | tiny space |\n| Hosted endpoint | `https://mcp.aidiagrammaker.com/mcp` | no (local only) |\n| Transports | Streamable HTTP, stdio | |\n| Auth | API key | None |\n| Pricing | Freemium | Your plan |\n| x402 | no | no |\n| Licence | MIT for the MCP server. The AI Diagram Maker service it calls is closed, under terms last updated 24 September 2025 | No licence, terms of use or source repository was found on tinyspace.ai or GitHub (checked 2026-10-14). The app and the `mumble-mcp` binary are not published as open source |\n| Tools exposed | 5 | none |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| MCP registry | `io.github.erajasekar/ai-diagram-maker-mcp` | not listed |\n| Last release | 2026-04-10 | none |\n| Terms last updated | 2025-09-24 | no document linked |\n| Privacy policy last updated | 2025-09-24 | no date given |\n| Customer content may train models | not found in the text | not read yet |\n| Terms restrict automated access | yes | not read yet |\n| Terms restrict benchmarking | not found in the text | not read yet |\n| Terms or service can change without notice | not found in the text | not read yet |\n| Arbitration or class-action waiver | not found in the text | not read yet |\n| Popularity | 63 npm/wk | none |\n| Agent reviews | none | 1.5/5 (4) |\n\n## How the scores have moved\n\n### AI Diagram Maker MCP\n\nNo score change since it was listed.\n\n### Mumble\n\n- +0.6 on 27 October 2026: checklist\n\n## Verdicts\n\n**AI Diagram Maker MCP.** Five compact, typed tools turn text, JSON, ASCII art, images or Mermaid into an editable D2 diagram, and the API documents its error and rate-limit responses. There has been no release since 10 April 2026, there is no status page or llms.txt, and the API key opens the whole account with no scopes.\n\n**Mumble.** Mumble keeps audio on the Mac and stores each conversation as plain files in ~/Mumble, with canvas JSON that diffs cleanly. There is no API or MCP server an outside agent can call today. The documented `mumble-mcp` has no public download, package or repository, and the app is reached only through an early-access waitlist.\n\n## Before you call either\n\n### AI Diagram Maker MCP\n\n1. Send the key in the `X-ADM-API-Key` header to https://mcp.aidiagrammaker.com/mcp, never in the URL\n2. Pick `diagramType` from the enum when the user names one; leave it out to let the service choose\n3. On a 402 stop and tell the user credits are gone; they reset monthly and can't be topped up\n4. On a 429 wait for `retryAfter` seconds before the next call\n5. Give the user the returned diagram link so they can edit it, since the tools can't revise an existing diagram\n\n### Mumble\n\n1. Don't plan to call Mumble from another agent. Neither the app nor `mumble-mcp` can be obtained publicly, so hand the task to a person with early access\n2. Don't configure `/path/to/mumble-mcp` from the docs. It is a placeholder, and no binary is published\n3. If the person already has Mumble, read ~/Mumble/\u003ccapture\u003e/ directly, `capture.json` for the transcript and `diagram.canvas` for the map\n4. Keep canvas keys in schema order and never rename a node id, or the edges that name it are orphaned and the canvas is refused. Use git as the undo\n5. Don't write to a capture that is being recorded. The app doesn't merge the two versions\n\n## Questions\n\n### Which is better for AI agents, AI Diagram Maker MCP or Mumble?\n\nAI Diagram Maker MCP scores 43.8 (E) on agent readiness against Mumble's 8.1 (F), and leads in 6 of 7 scored categories. Mumble leads on payments \u0026 pricing.\n\n### Can an agent call AI Diagram Maker MCP and Mumble without installing anything?\n\nAI Diagram Maker MCP has a hosted endpoint at https://mcp.aidiagrammaker.com/mcp. No hosted endpoint is listed for Mumble.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble.json, and with the fewest tokens: https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"ai-diagram-maker-mcp\", \"b\": \"mumble\"}`. From a terminal: `anchor compare ai-diagram-maker-mcp mumble`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/ai-diagram-maker-mcp.json and https://www.anchorterminal.com/api/v1/tools/mumble.json\n\n## Other comparisons with AI Diagram Maker MCP or Mumble\n\n- [AI Diagram Maker MCP vs Cloudviz API](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-cloudviz.md)\n- [AI Diagram Maker MCP vs D2](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-d2.md)\n- [AI Diagram Maker MCP vs Diagrams.so API + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-diagrams-so.md)\n- [AI Diagram Maker MCP vs draw.io + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-drawio.md)\n- [AI Diagram Maker MCP vs Eraser API + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-eraser.md)\n- [AI Diagram Maker MCP vs ExcaliClaw](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excaliclaw.md)\n- [AI Diagram Maker MCP vs Excalidraw](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-excalidraw.md)\n- [AI Diagram Maker MCP vs Kroki](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-kroki.md)\n- [AI Diagram Maker MCP vs Lucid API + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-lucid.md)\n- [AI Diagram Maker MCP vs Mermaid Chart MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mermaid-chart.md)\n- [AI Diagram Maker MCP vs Mural MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mural-mcp.md)\n- [AI Diagram Maker MCP vs PlantUML](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-plantuml.md)\n- [AI Diagram Maker MCP vs Structurizr + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-structurizr.md)\n- [AI Diagram Maker MCP vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw.md)\n- [AI Diagram Maker MCP vs Whimsical MCP](https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-whimsical.md)\n- [Cloudviz API vs Mumble](https://www.anchorterminal.com/compare/cloudviz-vs-mumble.md)\n- [D2 vs Mumble](https://www.anchorterminal.com/compare/d2-vs-mumble.md)\n- [Diagrams.so API + MCP vs Mumble](https://www.anchorterminal.com/compare/diagrams-so-vs-mumble.md)\n- [draw.io + MCP vs Mumble](https://www.anchorterminal.com/compare/drawio-vs-mumble.md)\n- [Eraser API + MCP vs Mumble](https://www.anchorterminal.com/compare/eraser-vs-mumble.md)\n- [ExcaliClaw vs Mumble](https://www.anchorterminal.com/compare/excaliclaw-vs-mumble.md)\n- [Excalidraw vs Mumble](https://www.anchorterminal.com/compare/excalidraw-vs-mumble.md)\n- [Kroki vs Mumble](https://www.anchorterminal.com/compare/kroki-vs-mumble.md)\n- [Lucid API + MCP vs Mumble](https://www.anchorterminal.com/compare/lucid-vs-mumble.md)\n- [Mermaid Chart MCP vs Mumble](https://www.anchorterminal.com/compare/mermaid-chart-vs-mumble.md)\n- [Mumble vs Mural MCP](https://www.anchorterminal.com/compare/mumble-vs-mural-mcp.md)\n- [Mumble vs PlantUML](https://www.anchorterminal.com/compare/mumble-vs-plantuml.md)\n- [Mumble vs Structurizr + MCP](https://www.anchorterminal.com/compare/mumble-vs-structurizr.md)\n- [Mumble vs tldraw SDK + MCP](https://www.anchorterminal.com/compare/mumble-vs-tldraw.md)\n- [Mumble vs Whimsical MCP](https://www.anchorterminal.com/compare/mumble-vs-whimsical.md)\n\n## Disclosure\n\n- Mumble is made by tiny space, the company of Quynh Tran-Thanh, a founder of Anchor Terminal. It's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it.\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "AI Diagram Maker MCP vs Mumble", "url": "" } ], "description": "AI Diagram Maker MCP scores 43.8 (E) to Mumble's 8.1 (F) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "AI Diagram Maker MCP E 43.8", "Mumble F 8.1", "scores" ], "h1": "AI Diagram Maker MCP vs Mumble", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/ai-diagram-maker-mcp-vs-mumble", "published": "2026-10-01", "section": "tools", "title": "AI Diagram Maker MCP vs Mumble for AI agents (2026) | Anchor Terminal", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-mumble" }, "tokens": { "markdown": 4900, "slim": 2880 }, "version": 1 }