# AI Diagram Maker MCP vs tldraw SDK + MCP (slim)

> tldraw SDK scores 57 (C) to AI Diagram Maker MCP's 43.8 (E) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw.md (~4,600 tokens) · this version ~2,630 tokens · JSON https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw.json · canonical https://www.anchorterminal.com/compare/ai-diagram-maker-mcp-vs-tldraw
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

tldraw SDK + MCP scores 57 (C) on agent readiness against AI Diagram Maker MCP's 43.8 (E), and leads in 6 of 7 scored categories. AI Diagram Maker MCP leads on security & auth. Both do diagram creation.

- AI Diagram Maker MCP: E 43.8, rank #1225 of 1486 · https://www.anchorterminal.com/tools/ai-diagram-maker-mcp.min.md
- tldraw SDK + MCP: C 57, rank #808 of 1486 · https://www.anchorterminal.com/tools/tldraw.min.md
- AI Diagram Maker MCP, good for Quick architecture, sequence, ERD and flowchart diagrams from a coding agent, with a link to edit them. Ahead on Security & auth, 45 against 40. Also Runs on your own machine; No incidents deducted, where tldraw SDK + MCP loses 5 points for them.
- tldraw SDK + MCP, good for Teams building a product where a person and an agent share a canvas. Ahead on Reliability, 70 against 30; Agent ergonomics, 71 against 66; Payments & pricing, 35 against 20; Maintenance & community, 89 against 17; Transparency & trust, 51 against 35. Also No key needed to call it.

| Category | AI Diagram Maker MCP | tldraw SDK + MCP |
| --- | --- | --- |
| Reliability (16%) | 30 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 75 | 79 |
| Agent ergonomics (13%) | 66 | 71 |
| Security & auth (14%) | 45 | 40 |
| Payments & pricing (10%) | 20 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 17 | 89 |
| Transparency & trust (7%) | 35 | 51 |

| Fact (where they differ) | AI Diagram Maker MCP | tldraw SDK + MCP |
| --- | --- | --- |
| Kind | MCP server | SDK + MCP |
| Vendor | AI Diagram Maker (Rajasekar Elango) | tldraw |
| Hosted endpoint | `https://mcp.aidiagrammaker.com/mcp` | `https://tldraw-mcp-app.tldraw.workers.dev/mcp` |
| Transports | Streamable HTTP, stdio | Streamable HTTP, SSE (legacy) |
| Auth | API key | None |
| Pricing | Freemium | Paid |
| Licence | MIT for the MCP server. The AI Diagram Maker service it calls is closed, under terms last updated 24 September 2025 | tldraw licence (source-available, production needs a licence key) |
| Tools exposed | 5 | 6 |
| llms.txt | no | yes |
| MCP registry | `io.github.erajasekar/ai-diagram-maker-mcp` | `io.github.tldraw/tldraw` |
| Last release | 2026-04-10 | 2026-10-28 |
| Terms last updated | 2025-09-24 | couldn't be read |
| Privacy policy last updated | 2025-09-24 | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 63 npm/wk | 51k stars, 490k npm/wk |
| Agent reviews | none | 3/5 (2) |

Why the edge:
- Maintenance & community, tldraw SDK + MCP +72: 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.); tldraw SDK + MCP 89 (v5.6.0 tagged on 28 October 2026 (30). At least eleven releases since 5 August, v5.3.0 to v5.3.2, v5.4.0 to v5.4.2, v5.5.0, v5.5.1, v5.5.2, v5.5.4 and v5.6.0 (20). The main branch had 29 commits from 28 October to 3 November and an issue-triage workflow runs, reply times not checked (15). The MCP App is in the official registry as io.github.tldraw/tldraw, active (15). CI checks, a dependency dedupe workflow and a licence report (9).)
- Reliability, tldraw SDK + MCP +40: 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.); tldraw SDK + MCP 70 (Scored as an SDK. The `tldraw` npm package with React runtimes stated in the docs (20). A public `checks.yml` workflow and test suites across packages, pass state on main unreadable (GitHub's pages and API refuse our reader), so 15 as this run scores an unread pass state. A stale bot marks issues after 150 days without activity and closes them 30 days later, and open crash reports weren't counted, per the 1 October check (12). RELEASES.md says tldraw doesn't follow semver and minor releases "may contain breaking changes", with breaking items flagged in each release note (8). v5 is a stable line (15). The hosted MCP App has a Cloudflare rate limiter in code with no published numbers and no status page.)
- Transparency & trust, tldraw SDK + MCP +16: 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.); tldraw SDK + MCP 51 (Source-available under the tldraw licence, explicitly not open source, with clear terms (15). The SDK runs in your app. The hosted MCP App keeps canvas checkpoints in a Durable Object SQLite store, capped by count, with exec results kept 10 minutes, none of which we found in a policy (12). RELEASES.md commits to warnings several releases before a breaking change, and v5.4 deprecated `useViewportHeight()` ahead of removal, though the breaking changes in v5.2.0, v5.3.0 and v5.5.0 came without earlier warnings (12). Licence pings are documented on the licence key page, but the licence page still says less than the code sends. Opting out means a commercial licence (6).)
- Payments & pricing, tldraw SDK + MCP +15: AI Diagram Maker MCP 20 (No x402, MPP or L402 (0). Plan prices are public (Plus $10, Max $20 a month), with credits counted at 1,000 tokens each, so there's no per-diagram price (10 of 20). Basic is free forever with 50 credits a month, but the page doesn't say whether a card is needed or whether API and MCP calls are included (10 of 20, half as with an unstated card rule). A person signs up in the app and creates the key (0). 0 + 10 + 10 + 0 = 20.); tldraw SDK + MCP 35 (No payment protocol (0). Commercial prices are agreed with sales, "value-based", nothing published (0). Development use needs no key, and a 100-day production trial licence is emailed on submitting a form, with no payment step (20). An agent can use the SDK in development and the hosted MCP App with no signup, but production needs a person to request a licence (15).)
- Agent ergonomics, tldraw SDK + MCP +5: 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.); tldraw SDK + MCP 71 (Two model-facing MCP tools, with four more hidden from the model as app-only (25). `search` returns matching parts of the API spec instead of the whole thing, and canvases export to image or JSON (12). `exec` returns the thrown error text (10). All six tools carry readOnlyHint, destructiveHint and idempotentHint, `search` is read-only, `exec` isn't idempotent (16). TypeScript only, and the canvas needs a host that renders MCP Apps (8).)
- Security & auth, AI Diagram Maker MCP +5: 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.); tldraw SDK + MCP 40 (No API key. Licence keys are public and checked offline. The hosted MCP App has no auth, with an optional token for self-hosted copies (18). `search` is read-only, but `exec` runs model-written JavaScript against the live editor in the host's iframe, with no approval step (8). Canvas text can come from people and goes back to the model, and we found no injection guidance (8). No audit log (0). SECURITY.md takes reports at hello@tldraw.com with a 24-hour response target and, since 2 November 2026, lists 3.x, 4.x and 5.x as supported. No security.txt (404 on 3 November), no bug bounty found, no advisories in OSV (6).)