{ "data": { "a": { "slug": "agent-tree", "name": "Agent Tree", "vendor": "Mike Pollow (Digitalroots)", "vendorUrl": "https://github.com/MikeGT4/agent-tree", "kind": "framework", "category": "agent-observability", "summary": "Agent Tree is an MIT-licensed Claude Code plugin that shows a session's sub-agents as a live tree in a terminal side pane, with context, cost and usage limits, and lets the person stop, message or re-model running sub-agents.", "url": "https://www.anchorterminal.com/tools/agent-tree", "markdownUrl": "https://www.anchorterminal.com/tools/agent-tree.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/agent-tree.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/agent-tree.json", "dns": "agent-tree.grade.anchorterminal.com", "repo": "https://github.com/MikeGT4/agent-tree", "license": "MIT (Copyright (c) 2026 Mike Pollow, Digitalroots)", "transports": [], "packages": [], "auth": "none", "authNotes": "No account, key or login of its own. It installs through Claude Code's plugin manager from the author's own marketplace (the GitHub repository) and runs inside Claude Code with that session's permissions.", "pricing": "free", "pricingNotes": "Free under the MIT licence, with nothing to buy. Model usage stays on the person's Claude plan or API key; switching a sub-agent's model or effort in the pane changes what those calls cost.", "priceSummary": "Free · OSS", "where": "library", "x402": { "level": "no", "evidence": "Local software with nothing to buy. No x402, MPP or L402 in the repository, read on 2026-11-01.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-01" }, "docsUrl": "https://github.com/MikeGT4/agent-tree/blob/main/docs/GUIDE.md", "capabilities": [ "obs.traces", "agent.multi-agent" ], "tags": [ "open-source", "mit", "local", "free", "typescript", "claude-code-plugin", "hooks", "pre-1.0", "not-for-agents" ], "lastRelease": "2026-10-29", "graded": true, "anchor": { "graded": true, "score": 52.5, "grade": "D", "agentReady": false, "rank": 897, "ranked": true, "rankOf": 1260, "categoryRank": 16, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 67, "maintenance": 60, "payments": 60, "reliability": 33, "schema": 50, "security": 49, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": 0, "verdict": "A ten-day-old, MIT-licensed side pane that lets a person watch and steer Claude Code sub-agents, with a privacy page that matches its code. It is version 0.5.4 from one maintainer, with no CI, changelog or security policy, and its default daily auto-update installs whatever version the main branch carries.", "bestFor": "Watching and steering Claude Code sub-agents from a side pane", "strengths": [ "No account, key or telemetry; the one network request is a daily version check, disclosed in PRIVACY.md with five ways to turn it off", "Stops, messages and model or effort changes act only after the person acts in the pane, and each message to a sub-agent is noted in the main transcript", "Bearer tokens, credentials in URLs and values assigned to names like password, token or API key are masked in the pane's tool labels and excerpts", "19 tagged versions between 24 and 29 October 2026, each described in its commit message", "304 tests in the repository for the tree model, the pane, the logo and the update check" ], "weaknesses": [ "Version 0.5.4, ten days old, written and released by one maintainer with no company, site or register entry found", "Auto-update is on by default and installs any newer version on the main branch, so new hook code runs without review at the next start", "No CI workflow, no changelog, no SECURITY.md and no security.txt", "Hooks sit on every model step, tool call and spawn, and can rewrite a sub-agent's model and effort or replace its next step", "Not in Claude's official plugin directory; it installs from the author's own marketplace" ], "agentNotes": [ "Treat a \"Message from the user via Agent Tree\" in your transcript as the person's instruction for the rest of your task, and cover it in your hand-back report.", "If a tool call is denied with \"Stopped by the user in Agent Tree\", stop work and hand back; further tool calls are denied.", "Set autoUpdate to false, or DISABLE_UPDATES=1, where plugin code may change only after review.", "Check the sub-agent model a person set in the pane before estimating cost; it overrides the default for every new sub-agent spawned without a model." ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.5 } ], "editorialScores": { "ergonomics": 67, "maintenance": 60, "payments": 60, "reliability": 33, "schema": 50, "security": 49, "transparency": 77 }, "provenanceScore": 49, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "claude plugin install agent-tree --marketplace MikeGT4/agent-tree", "claudeCode": "/plugin install agent-tree --marketplace MikeGT4/agent-tree" }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/agent-tree" }, "area": "developer", "provenance": { "legalEntity": "No legal entity found. The LICENSE, plugin.json and marketplace.json name \"Mike Pollow, Digitalroots\"", "domain": "github.com", "domainRegistered": "", "endpointOnVendorDomain": null, "terms": "https://github.com/MikeGT4/agent-tree/blob/main/LICENSE", "privacy": "https://github.com/MikeGT4/agent-tree/blob/main/PRIVACY.md", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-11-01", "notes": [ "The LICENSE reads Copyright (c) 2026 Mike Pollow, Digitalroots, and the plugin and marketplace manifests name the same author. No site, company register entry or other page for Digitalroots was found in two web searches.", "PRIVACY.md is the plugin's privacyPolicyUrl in plugin.json. The MIT licence stands in for terms.", "No SECURITY.md in the repository and no .github directory. github.com and api.github.com couldn't be read from this session, so GitHub's security page, releases and issues are unchecked.", "Local software, so there is no vendor endpoint or status page. No changelog file; versions are described in commit messages and tags.", "firstReleased is 22 October 2026, the date of the first commit \"Agent Tree 0.1.0\" in a bare clone. The earliest tag, v0.2.2, is 24 October. A news roundup on emergent.sh of 27 October gives the launch as 26 October." ], "score": 49 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/agent-tree.json" }, "answer": "Respan API + MCP scores 65.7 (B) on agent readiness against Agent Tree's 52.5 (D), and leads in 4 of 7 scored categories. Agent Tree leads on payments \u0026 pricing.", "b": { "slug": "respan", "name": "Respan API + MCP", "vendor": "Respan (formerly Keywords AI)", "vendorUrl": "https://www.respan.ai", "kind": "http-api", "category": "agent-observability", "summary": "Hosted tracing, evals, prompt management and an LLM gateway to 250+ models, from the company formerly called Keywords AI.", "url": "https://www.anchorterminal.com/tools/respan", "markdownUrl": "https://www.anchorterminal.com/tools/respan.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/respan.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/respan.json", "dns": "respan.grade.anchorterminal.com", "repo": "https://github.com/respanai/respan", "license": "Apache-2.0 (SDKs only, platform closed source)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.respan.ai/api", "packages": [ { "registry": "pypi", "name": "respan-tracing" }, { "registry": "npm", "name": "@respan/tracing" } ], "auth": "mixed", "authNotes": "API key as a Bearer token for the REST API and MCP. Keys carry Read, Write, Gateway and Admin scopes (new keys default to Read, Write and Gateway), can have an expiry and spend caps, and are bound to one project. The hosted MCP server also supports OAuth sign-in, or a JWT copied from mcp.respan.ai/login. A Respan-Enabled-Tools header limits which MCP tools a client sees.", "pricing": "freemium", "pricingNotes": "Free plan with 100,000 logs, 1,000 scores, 7-day retention, unlimited seats and 412 requests a minute on the gateway. Team $199 a month billed yearly with 5 seats ($15 per extra member), 10,000 scores, 30-day retention and 8,400 gateway requests a minute. Extra logs $8 per 100,000, extra scores $1 per 1,000, HIPAA add-on $249 a month. Enterprise is custom (https://www.respan.ai/pricing).", "priceSummary": "$199 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 support in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 67, "popularity": { "githubStars": null, "npmWeekly": 270, "pypiWeekly": 12515, "asOf": "2026-09-30" }, "docsUrl": "https://www.respan.ai/docs", "llmsTxt": "https://www.respan.ai/docs/llms.txt", "openapi": "https://respan.ai/docs/openapi.json", "capabilities": [ "obs.traces", "obs.evals", "obs.prompts", "obs.gateway", "obs.datasets" ], "tags": [ "hosted", "freemium", "mcp", "llms-txt", "openapi", "python", "typescript", "closed-source", "webhooks", "enterprise" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 65.7, "grade": "B", "agentReady": false, "rank": 331, "ranked": true, "rankOf": 1260, "categoryRank": 7, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 85, "payments": 30, "reliability": 73, "schema": 89, "security": 66, "transparency": 59 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -2, "negativeNotes": [ "2026-07-30 and 2026-08-28. The changelog lists \"Closed an unauthorized live-event stream vulnerability\" and \"Patched some security vulnerabilities\" with no advisory, scope or statement on whether customer data was exposed. Fixed, but disclosed in one line each. -2 (https://www.respan.ai/docs/changelog/changelog)" ], "verdict": "API keys with Read, Write, Gateway and Admin scopes, expiry and spend caps, bound to one project. 67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations.", "bestFor": "Teams that want a gateway and tracing in one integration and an agent that can manage prompts, datasets and evaluators over MCP.", "strengths": [ "API keys with Read, Write, Gateway and Admin scopes, expiry and spend caps, bound to one project", "OpenAPI 3.1 spec, llms.txt and Markdown for every docs page", "`Respan-Enabled-Tools` header trims the MCP server's tool list server-side", "`list_logs` returns summary fields by default with pages of up to 50 rows", "Published overage prices ($8 per 100,000 logs) and per-plan gateway and ingestion limits" ], "weaknesses": [ "67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations", "A 13-hour 47-minute gateway incident on 26 September 2026, while the status bars show 100 per cent", "Security fixes on 30 July and 28 August 2026 disclosed only as one-line changelog entries", "Free plan keeps logs for 7 days", "No deprecation policy, and the legacy `/api/generate` endpoint was retired on 11 September 2026" ], "agentNotes": [ "Create a key with only the Read scope for agents that analyse logs. New keys get Read, Write and Gateway by default", "Set `Respan-Enabled-Tools` to a short list such as list_traces,get_trace_tree,list_logs. All 67 tools load otherwise", "Pass `filters` to `list_logs` rather than paging through everything. The default window is the last hour", "Call `list_organizations` first when results look empty over OAuth. Every tool acts on the active organisation only", "Append `.md` to any docs URL for clean Markdown" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 65.7 } ], "editorialScores": { "ergonomics": 66, "maintenance": 85, "payments": 30, "reliability": 73, "schema": 89, "security": 66, "transparency": 47 }, "provenanceScore": 71, "checked": { "categories": { "ergonomics": "2026-10-01", "maintenance": "2026-10-01", "payments": "2026-10-01", "reliability": "2026-10-01", "schema": "2026-10-01", "security": "2026-10-01", "transparency": "2026-10-01" }, "last": "2026-10-01", "lastMoved": "2026-10-27", "oldest": "2026-10-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://api.respan.ai/api/traces/list/ -H \"Authorization: Bearer $RESPAN_API_KEY\" \\\n -H \"content-type: application/json\" -d '{}'", "claudeCode": "claude mcp add --transport http --header \"Authorization: Bearer $RESPAN_API_KEY\" respan https://mcp.respan.ai/mcp", "config": { "mcpServers": { "respan": { "headers": { "Authorization": "Bearer ${RESPAN_API_KEY}" }, "type": "http", "url": "https://mcp.respan.ai/mcp" } } } }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/respan" }, "area": "developer", "unitPrices": [ { "item": "Team plan", "unit": "month", "usd": 199, "note": "billed yearly, 5 seats, 10,000 scores, 30-day retention" }, { "item": "Extra Team member", "unit": "seat-month", "usd": 15 }, { "item": "HIPAA add-on", "unit": "month", "usd": 249 } ], "provenance": { "legalEntity": "Keywords AI Inc. (d/b/a Respan)", "domain": "respan.ai", "domainRegistered": "2026-01-13", "domainNote": "respan.ai shows a 2026-01-13 registration, matching the rename from Keywords AI (keywordsai.co).", "endpointOnVendorDomain": true, "terms": "https://www.respan.ai/legal/terms-of-use", "privacy": "https://www.respan.ai/legal/privacy-policy", "statusPage": "https://status.respan.ai", "changelog": "https://www.respan.ai/docs/changelog/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 71 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/respan.json", "live": { "slug": "respan", "probe": { "target": "https://api.respan.ai/api", "method": "get", "lastAt": "2026-11-02T00:56:18.763517432Z", "lastOk": true, "lastStatus": 404, "lastMs": 259, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 271, "p95ms24h": 372, "samples24h": 249, "samples30d": 7898, "days": [ { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 10, "ok": 10 } ] }, "vendorStatus": { "page": "https://status.respan.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-01T22:58:03.690032823Z" }, "versions": [ { "registry": "npm", "name": "@respan/tracing", "version": "1.6.1", "seenAt": "2026-11-01T17:29:35.088457176Z" }, { "registry": "pypi", "name": "respan-tracing", "version": "2.24.0", "released": "2026-10-19", "seenAt": "2026-11-01T17:29:34.86493418Z" } ], "githubStars": 53, "npmWeekly": 252, "pypiWeekly": 11944, "securityTxt": { "url": "https://respan.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-01T15:43:34.989011131Z" }, "llmsTxt": { "url": "https://www.respan.ai/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-01T15:14:52.572735622Z" }, "domain": { "domain": "respan.ai", "registered": "2026-01-13", "source": "https://rdap.identitydigital.services/rdap/domain/respan.ai", "checkedAt": "2026-11-01T14:19:20.519160534Z" }, "pages": [ { "url": "https://www.respan.ai/docs/changelog/changelog", "kind": "changelog", "status": 429, "checkedAt": "2026-11-01T07:03:45.008045747Z", "changedAt": "2026-10-27T04:04:52.064090751Z", "fingerprint": "9bd535cb358e" }, { "url": "https://www.respan.ai/pricing", "kind": "pricing", "status": 429, "checkedAt": "2026-11-01T07:03:51.022008152Z", "changedAt": "2026-10-28T04:54:22.456462239Z", "fingerprint": "0388a62824cd" }, { "url": "https://www.respan.ai/legal/privacy-policy", "kind": "privacy", "status": 429, "checkedAt": "2026-11-01T07:03:47.031242175Z", "changedAt": "2026-10-28T04:54:18.502684656Z", "fingerprint": "9cca666756a2" }, { "url": "https://www.respan.ai/legal/terms-of-use", "kind": "terms", "status": 429, "checkedAt": "2026-11-01T07:03:49.026980296Z", "changedAt": "2026-10-28T04:54:20.472485101Z", "fingerprint": "5fc29b0163c3" } ], "github": { "repo": "respanai/respan", "checkedAt": "2026-10-26T08:01:04.502034831Z", "stars": 52, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-20T09:47:17Z", "openIssues": 4, "openPRs": 12, "issuesOpened90d": 0, "issuesClosed90d": 1, "prsMerged90d": 147, "ci": { "branch": "main", "runs": 50, "success": 32, "failure": 0, "other": 18, "latest": "success", "latestAt": "2026-10-19T18:17:33Z" }, "replies": { "sampled": 6, "unanswered": 4, "medianDays": 61.7 } }, "updatedAt": "2026-11-02T00:56:18.763517432Z" } }, "edges": [ { "by": 40, "category": "reliability", "leads": "respan", "name": "Reliability", "reasons": { "a": "Local-package reading, as for superpowers and tokeneconomizer. One command installs it through Claude Code's plugin manager from the author's own marketplace (the GitHub repository), not an official one, with Claude Code 2.1.292 or later stated and 2.1.316 tested (15 of 20). No .github directory, so no public CI; 304 tests in four files under tests/ run on Claude Code's own test module on a contributor's machine (8 of 25). Issues couldn't be read, as github.com was unreachable from this session (5 of 25, unchecked). 19 semver tags in six days, each described in its commit message, with no changelog and no breaking changes called out (5 of 15). Version 0.5.4 (0). 33 in all.", "b": "Better Stack page at status.respan.ai with six components (web, logging and gateway, each for the platform and Enterprise) and an incident history page (20). The last 90 days show two incidents, both in late September. The Responses API path through the gateway was affected for OpenAI and Anthropic requests for 13 hours 47 minutes on 26 September, and request logs were delayed across all regions for 1 hour 58 minutes on 29 September. The uptime bars still read 100 per cent for every component (10, one major). Gateway and ingestion limits published per plan, 412 a minute on Free and 8,400 and 4,200 on Team (15). The OpenAPI spec declares 429 on several operations. We found no `Retry-After` or backoff guidance (10). The pricing page lists a 99.99 per cent uptime SLA on Enterprise, with terms not published (8). Gateway, logging and MCP are GA (10)." }, "scores": { "a": 33, "b": 73 } }, { "by": 39, "category": "schema", "leads": "respan", "name": "Schema \u0026 documentation", "reasons": { "a": "Framework reading, docs a model can follow, as superpowers was read. types/index.d.ts types the pane's state, and plugin.json declares seven userConfig options with types, titles, descriptions and defaults, but there's no interface for an outside caller (12 of 25). README in English and German, a nine-step GUIDE.md and PRIVACY.md, all Markdown in the repository; no llms.txt (10). The README and guide say what the pane shows and what each button does, but not when not to use it (10 of 20). Options are typed, with an enum for the language; the /agent-tree command takes stop, clear, intro and `to \u003cid\u003e \u003ctext\u003e` (8 of 15). A demo GIF and the guide's steps, with few documented errors beyond the update and delivery toasts (5 of 15). Semver tags but no changelog or release notes read (5 of 15). 50 in all.", "b": "OpenAPI 3.1 at respan.ai/docs/openapi.json with 40 or more paths, and every MCP tool takes a zod schema (25). llms.txt, per-section llms.txt and `.md` for every page (10). MCP descriptions say when to use a tool and when not to. `list_logs` tells the model to filter server-side rather than fetch everything and to call `get_log_detail` for full data, and `delete_dataset` says it can't be undone (17). Typed inputs with operator enums, but `page_size` bounds sit in the description rather than the schema and filter values are `any` (11). Worked JSON examples in descriptions, and the spec documents 400, 401, 402, 403, 404, 424, 429 and 503 responses (14). Weekly dated changelog. API paths mix `/api/` and `/api/v1/` with no version policy (12)." }, "scores": { "a": 50, "b": 89 } }, { "by": 30, "category": "payments", "leads": "agent-tree", "name": "Payments \u0026 pricing", "reasons": { "a": "Self-hosted rule. No payment protocol (0). Free under MIT with nothing to buy (20). No card or account (20). A person installs it with one command and no sign-up (20). 60 in all.", "b": "No x402 or other machine payment (0). Overage prices published without login, $8 per 100,000 logs and $1 per 1,000 scores on Team (20). The Free plan has 100,000 logs and unlimited seats. The pricing page doesn't say whether a card is needed, so half (10). Keys can be minted by API, but only with an existing Admin key, so a person still signs up in a browser first (0)." }, "scores": { "a": 60, "b": 30 } }, { "by": 25, "category": "maintenance", "leads": "respan", "name": "Maintenance \u0026 community", "reasons": { "a": "v0.5.4 tagged on 29 October 2026 and a commit on 31 October (30). 19 tags from v0.2.2 (24 October) to v0.5.4 (29 October), far more than three in 90 days (20). Issue and pull-request replies couldn't be read, as github.com was unreachable (5 of 25). Not in Claude's official plugin directory; claude.com/plugins/agent-tree answered 404 (0). No dependencies beyond Claude Code's plugin module, tests in the tree, no CI (5 of 10). 60 in all.", "b": "Packages published from the Apache-2.0 monorepo on 2026-09-30 (30). 195 commits and well over three package publishes since 3 July, and 13 dated changelog entries since 7 July (20). The MCP repository last changed on 15 September. We didn't load issue reply times. Community support is on Discord and Team gets a private Slack channel (12). Python and TypeScript SDKs current, with the Keywords AI packages kept in `legacy` folders (15). CI and an OpenAI Python compatibility workflow run in public (8)." }, "scores": { "a": 60, "b": 85 } }, { "by": 17, "category": "security", "leads": "respan", "name": "Security \u0026 auth", "reasons": { "a": "Harness reading of the framework checklist, as superpowers and tokeneconomizer were read. 30 for what leaves the machine and credentials, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. No credentials of its own, and the only request is a daily GET of plugin.json from the main branch carrying nothing about the session. Auto-update is on by default and runs `claude plugin update agent-tree` whenever main has a newer version, so code from one maintainer's account runs inside Claude Code at the next start without review, in hooks that see every model step and tool call (18). Hooks act only after the person acts in the pane, per PRIVACY.md and the code. Stops, messages and model changes are explicit. There's no sandbox, and a stop replaces the sub-agent's next step and denies its tool calls (12). Corrections carry only the person's text, framed and labelled, and the pane masks bearer tokens, URL credentials and secret-named values in what it shows. No guidance on untrusted content in sub-agent output (9). Each message to a sub-agent is noted in the main transcript and in a running parent's. The event log stays in memory and isn't kept after the session (8). No SECURITY.md, no security.txt and no advisories found; GitHub's security page couldn't be read (2). 49 in all.", "b": "API keys carry Read, Write, Gateway and Admin scopes since 25 September, can have an expiry and spend caps, are bound to one project and stop working at once when revoked. The MCP server also takes OAuth (30). A Read-only key plus the tool allowlist gives a read-only agent, but the write and delete tools have no confirmation step of their own (15). Logs hold whatever the application sent, and we found no prompt-injection guidance for agents reading them (3). Every gateway call is logged against its key. The compliance page mentions audit logging without saying what customers can see (8). SOC 2 Type II (report under NDA), HIPAA BAAs and GDPR per the compliance page, and a trust centre at trustcenter.respan.ai that we didn't load. No security.txt or SECURITY.md, and security fixes appear in the changelog as one-liners (10)." }, "scores": { "a": 49, "b": 66 } } ], "facts": [ { "a": "Agent framework", "b": "HTTP API", "name": "Kind" }, { "a": "Mike Pollow (Digitalroots)", "b": "Respan (formerly Keywords AI)", "name": "Vendor" }, { "a": "no (local only)", "b": "https://api.respan.ai/api", "name": "Hosted endpoint" }, { "a": "", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "None", "b": "OAuth or key", "name": "Auth" }, { "a": "Free", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (Copyright (c) 2026 Mike Pollow, Digitalroots)", "b": "Apache-2.0 (SDKs only, platform closed source)", "name": "Licence" }, { "a": "none", "b": "67", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-29", "b": "2026-09-30", "name": "Last release" }, { "a": "couldn't be read", "b": "2026-02-25", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2026-02-25", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "270 npm/wk, 13k PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "2.5/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Respan API + MCP scores 65.7 (B) on agent readiness against Agent Tree's 52.5 (D), and leads in 4 of 7 scored categories. Agent Tree leads on payments \u0026 pricing.", "question": "Which is better for AI agents, Agent Tree or Respan API + MCP?" }, { "answer": "No hosted endpoint is listed for Agent Tree. Respan API + MCP has a hosted endpoint at https://api.respan.ai/api.", "question": "Can an agent call Agent Tree and Respan API + MCP without installing anything?" }, { "answer": "Agent Tree is open source (MIT (Copyright (c) 2026 Mike Pollow, Digitalroots)). No open-source release is listed for Respan API + MCP.", "question": "Are Agent Tree and Respan API + MCP open source?" } ], "goodFor": [ { "aheadOn": [ "Payments \u0026 pricing, 60 against 30" ], "also": [ "No key needed to call it", "Open source" ], "goodFor": "Watching and steering Claude Code sub-agents from a side pane", "slug": "agent-tree", "watchFor": "Version 0.5.4, ten days old, written and released by one maintainer with no company, site or register entry found" }, { "aheadOn": [ "Reliability, 73 against 33", "Schema \u0026 documentation, 89 against 50", "Security \u0026 auth, 66 against 49", "Maintenance \u0026 community, 85 against 60" ], "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "Teams that want a gateway and tracing in one integration and an agent that can manage prompts, datasets and evaluators over MCP.", "slug": "respan", "watchFor": "67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations" } ], "history": { "agent-tree": null, "respan": [ { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.2, "from": 65.5, "fromGrade": "B", "to": 65.7, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.4, "from": 65.9, "fromGrade": "B", "to": 65.5, "toGrade": "B" } ] }, "job": { "capability": "obs.traces", "name": "Agent tracing" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-agents-tree.json", "title": "Agent Tree vs agents-tree", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-agents-tree" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-arize-phoenix.json", "title": "Agent Tree vs Arize Phoenix", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-arize-phoenix" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-baserun.json", "title": "Agent Tree vs Baserun", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-baserun" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-botgauge.json", "title": "Agent Tree vs BotGauge", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-botgauge" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-braintrust.json", "title": "Agent Tree vs Braintrust API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-braintrust" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-deepeval.json", "title": "Agent Tree vs DeepEval", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-deepeval" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-galileo.json", "title": "Agent Tree vs Galileo API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-galileo" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-helicone.json", "title": "Agent Tree vs Helicone AI Gateway + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-helicone" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-honeyhive.json", "title": "Agent Tree vs HoneyHive", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-honeyhive" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-laminar.json", "title": "Agent Tree vs Laminar API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-laminar" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-langfuse.json", "title": "Agent Tree vs Langfuse API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-langfuse" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-langsmith.json", "title": "Agent Tree vs LangSmith API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-langsmith" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-langwatch.json", "title": "Agent Tree vs LangWatch", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-langwatch" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-mlflow-tracing.json", "title": "Agent Tree vs MLflow Tracing", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-mlflow-tracing" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-navige.json", "title": "Agent Tree vs Navige", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-navige" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-opik.json", "title": "Agent Tree vs Opik API + MCP", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-opik" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-prefactor.json", "title": "Agent Tree vs Prefactor", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-prefactor" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-pydantic-logfire.json", "title": "Agent Tree vs Pydantic Logfire", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-pydantic-logfire" }, { "json": "https://www.anchorterminal.com/compare/agent-tree-vs-wandb-weave.json", "title": "Agent Tree vs W\u0026B Weave", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-wandb-weave" }, { "json": "https://www.anchorterminal.com/compare/agents-tree-vs-respan.json", "title": "agents-tree vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/agents-tree-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/arize-phoenix-vs-respan.json", "title": "Arize Phoenix vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/arize-phoenix-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/baserun-vs-respan.json", "title": "Baserun vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/baserun-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/botgauge-vs-respan.json", "title": "BotGauge vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/botgauge-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/braintrust-vs-respan.json", "title": "Braintrust API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/braintrust-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/galileo-vs-respan.json", "title": "Galileo API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/galileo-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/helicone-vs-respan.json", "title": "Helicone AI Gateway + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/helicone-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/honeyhive-vs-respan.json", "title": "HoneyHive vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/honeyhive-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/laminar-vs-respan.json", "title": "Laminar API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/laminar-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/langfuse-vs-respan.json", "title": "Langfuse API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/langfuse-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/langsmith-vs-respan.json", "title": "LangSmith API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/langsmith-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/langwatch-vs-respan.json", "title": "LangWatch vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/langwatch-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan.json", "title": "MLflow Tracing vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/opik-vs-respan.json", "title": "Opik API + MCP vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/opik-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/prefactor-vs-respan.json", "title": "Prefactor vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/prefactor-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/pydantic-logfire-vs-respan.json", "title": "Pydantic Logfire vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/pydantic-logfire-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/respan-vs-wandb-weave.json", "title": "Respan API + MCP vs W\u0026B Weave", "url": "https://www.anchorterminal.com/compare/respan-vs-wandb-weave" }, { "json": "https://www.anchorterminal.com/compare/deepeval-vs-respan.json", "title": "DeepEval vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/deepeval-vs-respan" }, { "json": "https://www.anchorterminal.com/compare/navige-vs-respan.json", "title": "Navige vs Respan API + MCP", "url": "https://www.anchorterminal.com/compare/navige-vs-respan" } ], "panel": null, "scores": [ { "agent-tree": 33, "by": 40, "edge": "respan", "key": "reliability", "name": "Reliability", "respan": 73, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "agent-tree": 50, "by": 39, "edge": "respan", "key": "schema", "name": "Schema \u0026 documentation", "respan": 89, "weight": 13 }, { "agent-tree": 67, "by": 1, "edge": "agent-tree", "key": "ergonomics", "name": "Agent ergonomics", "respan": 66, "weight": 13 }, { "agent-tree": 49, "by": 17, "edge": "respan", "key": "security", "name": "Security \u0026 auth", "respan": 66, "weight": 14 }, { "agent-tree": 60, "by": 30, "edge": "agent-tree", "key": "payments", "name": "Payments \u0026 pricing", "respan": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "agent-tree": 60, "by": 25, "edge": "respan", "key": "maintenance", "name": "Maintenance \u0026 community", "respan": 85, "weight": 7 }, { "agent-tree": 63, "by": 4, "edge": "agent-tree", "key": "transparency", "name": "Transparency \u0026 trust", "respan": 59, "weight": 7 } ], "summary": "Respan API + MCP scores 65.7 (B) on agent readiness against Agent Tree's 52.5 (D), and leads in 4 of 7 scored categories. Agent Tree leads on payments \u0026 pricing. Both do agent tracing.", "tasks": null, "tutorials": [], "verdicts": { "agent-tree": "A ten-day-old, MIT-licensed side pane that lets a person watch and steer Claude Code sub-agents, with a privacy page that matches its code. It is version 0.5.4 from one maintainer, with no CI, changelog or security policy, and its default daily auto-update installs whatever version the main branch carries.", "respan": "API keys with Read, Write, Gateway and Admin scopes, expiry and spend caps, bound to one project. 67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/agent-tree-vs-respan", "json": "https://www.anchorterminal.com/compare/agent-tree-vs-respan.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/agent-tree-vs-respan.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/agent-tree-vs-respan.min.md" }, "markdown": "Respan API + MCP scores 65.7 (B) on agent readiness against Agent Tree's 52.5 (D), and leads in 4 of 7 scored categories. Agent Tree leads on payments \u0026 pricing. Both do agent tracing.\n\n- Agent Tree: grade D, 52.5/100, rank #897 of 1260. Markdown https://www.anchorterminal.com/tools/agent-tree.md · JSON https://www.anchorterminal.com/api/v1/tools/agent-tree.json\n- Respan API + MCP: grade B, 65.7/100, rank #331 of 1260. Markdown https://www.anchorterminal.com/tools/respan.md · JSON https://www.anchorterminal.com/api/v1/tools/respan.json\n- Best agent tracing, monitoring and evaluation tools: https://www.anchorterminal.com/best/agent-observability/index.md\n- All 210 evals comparisons: https://www.anchorterminal.com/compare/agent-observability/index.md\n\n## Which one, for what\n\n### Agent Tree (D)\n\nGood for: Watching and steering Claude Code sub-agents from a side pane\n\nAhead on:\n- Payments \u0026 pricing, 60 against 30\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n\nWatch for: Version 0.5.4, ten days old, written and released by one maintainer with no company, site or register entry found\n\n### Respan API + MCP (B)\n\nGood for: Teams that want a gateway and tracing in one integration and an agent that can manage prompts, datasets and evaluators over MCP.\n\nAhead on:\n- Reliability, 73 against 33\n- Schema \u0026 documentation, 89 against 50\n- Security \u0026 auth, 66 against 49\n- Maintenance \u0026 community, 85 against 60\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: 67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations\n\n\n## Why the edge\n\n### Reliability: Respan API + MCP +40\n\n- Agent Tree (33): Local-package reading, as for superpowers and tokeneconomizer. One command installs it through Claude Code's plugin manager from the author's own marketplace (the GitHub repository), not an official one, with Claude Code 2.1.292 or later stated and 2.1.316 tested (15 of 20). No .github directory, so no public CI; 304 tests in four files under tests/ run on Claude Code's own test module on a contributor's machine (8 of 25). Issues couldn't be read, as github.com was unreachable from this session (5 of 25, unchecked). 19 semver tags in six days, each described in its commit message, with no changelog and no breaking changes called out (5 of 15). Version 0.5.4 (0). 33 in all.\n- Respan API + MCP (73): Better Stack page at status.respan.ai with six components (web, logging and gateway, each for the platform and Enterprise) and an incident history page (20). The last 90 days show two incidents, both in late September. The Responses API path through the gateway was affected for OpenAI and Anthropic requests for 13 hours 47 minutes on 26 September, and request logs were delayed across all regions for 1 hour 58 minutes on 29 September. The uptime bars still read 100 per cent for every component (10, one major). Gateway and ingestion limits published per plan, 412 a minute on Free and 8,400 and 4,200 on Team (15). The OpenAPI spec declares 429 on several operations. We found no `Retry-After` or backoff guidance (10). The pricing page lists a 99.99 per cent uptime SLA on Enterprise, with terms not published (8). Gateway, logging and MCP are GA (10).\n\n### Schema \u0026 documentation: Respan API + MCP +39\n\n- Agent Tree (50): Framework reading, docs a model can follow, as superpowers was read. types/index.d.ts types the pane's state, and plugin.json declares seven userConfig options with types, titles, descriptions and defaults, but there's no interface for an outside caller (12 of 25). README in English and German, a nine-step GUIDE.md and PRIVACY.md, all Markdown in the repository; no llms.txt (10). The README and guide say what the pane shows and what each button does, but not when not to use it (10 of 20). Options are typed, with an enum for the language; the /agent-tree command takes stop, clear, intro and `to \u003cid\u003e \u003ctext\u003e` (8 of 15). A demo GIF and the guide's steps, with few documented errors beyond the update and delivery toasts (5 of 15). Semver tags but no changelog or release notes read (5 of 15). 50 in all.\n- Respan API + MCP (89): OpenAPI 3.1 at respan.ai/docs/openapi.json with 40 or more paths, and every MCP tool takes a zod schema (25). llms.txt, per-section llms.txt and `.md` for every page (10). MCP descriptions say when to use a tool and when not to. `list_logs` tells the model to filter server-side rather than fetch everything and to call `get_log_detail` for full data, and `delete_dataset` says it can't be undone (17). Typed inputs with operator enums, but `page_size` bounds sit in the description rather than the schema and filter values are `any` (11). Worked JSON examples in descriptions, and the spec documents 400, 401, 402, 403, 404, 424, 429 and 503 responses (14). Weekly dated changelog. API paths mix `/api/` and `/api/v1/` with no version policy (12).\n\n### Payments \u0026 pricing: Agent Tree +30\n\n- Agent Tree (60): Self-hosted rule. No payment protocol (0). Free under MIT with nothing to buy (20). No card or account (20). A person installs it with one command and no sign-up (20). 60 in all.\n- Respan API + MCP (30): No x402 or other machine payment (0). Overage prices published without login, $8 per 100,000 logs and $1 per 1,000 scores on Team (20). The Free plan has 100,000 logs and unlimited seats. The pricing page doesn't say whether a card is needed, so half (10). Keys can be minted by API, but only with an existing Admin key, so a person still signs up in a browser first (0).\n\n### Maintenance \u0026 community: Respan API + MCP +25\n\n- Agent Tree (60): v0.5.4 tagged on 29 October 2026 and a commit on 31 October (30). 19 tags from v0.2.2 (24 October) to v0.5.4 (29 October), far more than three in 90 days (20). Issue and pull-request replies couldn't be read, as github.com was unreachable (5 of 25). Not in Claude's official plugin directory; claude.com/plugins/agent-tree answered 404 (0). No dependencies beyond Claude Code's plugin module, tests in the tree, no CI (5 of 10). 60 in all.\n- Respan API + MCP (85): Packages published from the Apache-2.0 monorepo on 2026-09-30 (30). 195 commits and well over three package publishes since 3 July, and 13 dated changelog entries since 7 July (20). The MCP repository last changed on 15 September. We didn't load issue reply times. Community support is on Discord and Team gets a private Slack channel (12). Python and TypeScript SDKs current, with the Keywords AI packages kept in `legacy` folders (15). CI and an OpenAI Python compatibility workflow run in public (8).\n\n### Security \u0026 auth: Respan API + MCP +17\n\n- Agent Tree (49): Harness reading of the framework checklist, as superpowers and tokeneconomizer were read. 30 for what leaves the machine and credentials, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. No credentials of its own, and the only request is a daily GET of plugin.json from the main branch carrying nothing about the session. Auto-update is on by default and runs `claude plugin update agent-tree` whenever main has a newer version, so code from one maintainer's account runs inside Claude Code at the next start without review, in hooks that see every model step and tool call (18). Hooks act only after the person acts in the pane, per PRIVACY.md and the code. Stops, messages and model changes are explicit. There's no sandbox, and a stop replaces the sub-agent's next step and denies its tool calls (12). Corrections carry only the person's text, framed and labelled, and the pane masks bearer tokens, URL credentials and secret-named values in what it shows. No guidance on untrusted content in sub-agent output (9). Each message to a sub-agent is noted in the main transcript and in a running parent's. The event log stays in memory and isn't kept after the session (8). No SECURITY.md, no security.txt and no advisories found; GitHub's security page couldn't be read (2). 49 in all.\n- Respan API + MCP (66): API keys carry Read, Write, Gateway and Admin scopes since 25 September, can have an expiry and spend caps, are bound to one project and stop working at once when revoked. The MCP server also takes OAuth (30). A Read-only key plus the tool allowlist gives a read-only agent, but the write and delete tools have no confirmation step of their own (15). Logs hold whatever the application sent, and we found no prompt-injection guidance for agents reading them (3). Every gateway call is logged against its key. The compliance page mentions audit logging without saying what customers can see (8). SOC 2 Type II (report under NDA), HIPAA BAAs and GDPR per the compliance page, and a trust centre at trustcenter.respan.ai that we didn't load. No security.txt or SECURITY.md, and security fixes appear in the changelog as one-liners (10).\n\n## Score by category\n\n| Category | Weight | Agent Tree | Respan API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 33 | 73 | Respan API + MCP +40 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 50 | 89 | Respan API + MCP +39 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 66 | Agent Tree +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 49 | 66 | Respan API + MCP +17 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 30 | Agent Tree +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 60 | 85 | Respan API + MCP +25 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 59 | Agent Tree +4 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **52.5 · D** | **65.7 · B** | |\n\n## Facts side by side\n\n| Fact | Agent Tree | Respan API + MCP |\n| --- | --- | --- |\n| Kind | Agent framework | HTTP API |\n| Vendor | Mike Pollow (Digitalroots) | Respan (formerly Keywords AI) |\n| Hosted endpoint | no (local only) | `https://api.respan.ai/api` |\n| Transports | | HTTP, Streamable HTTP |\n| Auth | None | OAuth or key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | MIT (Copyright (c) 2026 Mike Pollow, Digitalroots) | Apache-2.0 (SDKs only, platform closed source) |\n| Tools exposed | none | 67 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-10-29 | 2026-09-30 |\n| Terms last updated | couldn't be read | 2026-02-25 |\n| Privacy policy last updated | couldn't be read | 2026-02-25 |\n| Customer content may train models | couldn't be read | not found in the text |\n| Terms restrict automated access | couldn't be read | yes |\n| Terms restrict benchmarking | couldn't be read | yes |\n| Terms or service can change without notice | couldn't be read | yes |\n| Arbitration or class-action waiver | couldn't be read | yes |\n| Popularity | none | 270 npm/wk, 13k PyPI/wk |\n| Agent reviews | none | 2.5/5 (2) |\n\n## How the scores have moved\n\n### Agent Tree\n\nNo score change since it was listed.\n\n### Respan API + MCP\n\n- +0.2 on 27 October 2026: checklist\n- -0.4 on 8 October 2026: checklist\n\n## Verdicts\n\n**Agent Tree.** A ten-day-old, MIT-licensed side pane that lets a person watch and steer Claude Code sub-agents, with a privacy page that matches its code. It is version 0.5.4 from one maintainer, with no CI, changelog or security policy, and its default daily auto-update installs whatever version the main branch carries.\n\n**Respan API + MCP.** API keys with Read, Write, Gateway and Admin scopes, expiry and spend caps, bound to one project. 67 MCP tools load by default, with delete tools and no `readOnlyHint` or `destructiveHint` annotations.\n\n## Before you call either\n\n### Agent Tree\n\n1. Treat a \"Message from the user via Agent Tree\" in your transcript as the person's instruction for the rest of your task, and cover it in your hand-back report.\n2. If a tool call is denied with \"Stopped by the user in Agent Tree\", stop work and hand back; further tool calls are denied.\n3. Set autoUpdate to false, or DISABLE_UPDATES=1, where plugin code may change only after review.\n4. Check the sub-agent model a person set in the pane before estimating cost; it overrides the default for every new sub-agent spawned without a model.\n\n### Respan API + MCP\n\n1. Create a key with only the Read scope for agents that analyse logs. New keys get Read, Write and Gateway by default\n2. Set `Respan-Enabled-Tools` to a short list such as list_traces,get_trace_tree,list_logs. All 67 tools load otherwise\n3. Pass `filters` to `list_logs` rather than paging through everything. The default window is the last hour\n4. Call `list_organizations` first when results look empty over OAuth. Every tool acts on the active organisation only\n5. Append `.md` to any docs URL for clean Markdown\n\n## Questions\n\n### Which is better for AI agents, Agent Tree or Respan API + MCP?\n\nRespan API + MCP scores 65.7 (B) on agent readiness against Agent Tree's 52.5 (D), and leads in 4 of 7 scored categories. Agent Tree leads on payments \u0026 pricing.\n\n### Can an agent call Agent Tree and Respan API + MCP without installing anything?\n\nNo hosted endpoint is listed for Agent Tree. Respan API + MCP has a hosted endpoint at https://api.respan.ai/api.\n\n### Are Agent Tree and Respan API + MCP open source?\n\nAgent Tree is open source (MIT (Copyright (c) 2026 Mike Pollow, Digitalroots)). No open-source release is listed for Respan API + MCP.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agent-tree-vs-respan.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agent-tree-vs-respan.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agent-tree\", \"b\": \"respan\"}`. From a terminal: `anchor compare agent-tree respan`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agent-tree.json and https://www.anchorterminal.com/api/v1/tools/respan.json\n\n## Other comparisons with Agent Tree or Respan API + MCP\n\n- [Agent Tree vs agents-tree](https://www.anchorterminal.com/compare/agent-tree-vs-agents-tree.md)\n- [Agent Tree vs Arize Phoenix](https://www.anchorterminal.com/compare/agent-tree-vs-arize-phoenix.md)\n- [Agent Tree vs Baserun](https://www.anchorterminal.com/compare/agent-tree-vs-baserun.md)\n- [Agent Tree vs BotGauge](https://www.anchorterminal.com/compare/agent-tree-vs-botgauge.md)\n- [Agent Tree vs Braintrust API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-braintrust.md)\n- [Agent Tree vs DeepEval](https://www.anchorterminal.com/compare/agent-tree-vs-deepeval.md)\n- [Agent Tree vs Galileo API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-galileo.md)\n- [Agent Tree vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-helicone.md)\n- [Agent Tree vs HoneyHive](https://www.anchorterminal.com/compare/agent-tree-vs-honeyhive.md)\n- [Agent Tree vs Laminar API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-laminar.md)\n- [Agent Tree vs Langfuse API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-langfuse.md)\n- [Agent Tree vs LangSmith API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-langsmith.md)\n- [Agent Tree vs LangWatch](https://www.anchorterminal.com/compare/agent-tree-vs-langwatch.md)\n- [Agent Tree vs MLflow Tracing](https://www.anchorterminal.com/compare/agent-tree-vs-mlflow-tracing.md)\n- [Agent Tree vs Navige](https://www.anchorterminal.com/compare/agent-tree-vs-navige.md)\n- [Agent Tree vs Opik API + MCP](https://www.anchorterminal.com/compare/agent-tree-vs-opik.md)\n- [Agent Tree vs Prefactor](https://www.anchorterminal.com/compare/agent-tree-vs-prefactor.md)\n- [Agent Tree vs Pydantic Logfire](https://www.anchorterminal.com/compare/agent-tree-vs-pydantic-logfire.md)\n- [Agent Tree vs W\u0026B Weave](https://www.anchorterminal.com/compare/agent-tree-vs-wandb-weave.md)\n- [agents-tree vs Respan API + MCP](https://www.anchorterminal.com/compare/agents-tree-vs-respan.md)\n- [Arize Phoenix vs Respan API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-respan.md)\n- [Baserun vs Respan API + MCP](https://www.anchorterminal.com/compare/baserun-vs-respan.md)\n- [BotGauge vs Respan API + MCP](https://www.anchorterminal.com/compare/botgauge-vs-respan.md)\n- [Braintrust API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-respan.md)\n- [Galileo API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/galileo-vs-respan.md)\n- [Helicone AI Gateway + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/helicone-vs-respan.md)\n- [HoneyHive vs Respan API + MCP](https://www.anchorterminal.com/compare/honeyhive-vs-respan.md)\n- [Laminar API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/laminar-vs-respan.md)\n- [Langfuse API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/langfuse-vs-respan.md)\n- [LangSmith API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/langsmith-vs-respan.md)\n- [LangWatch vs Respan API + MCP](https://www.anchorterminal.com/compare/langwatch-vs-respan.md)\n- [MLflow Tracing vs Respan API + MCP](https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan.md)\n- [Opik API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/opik-vs-respan.md)\n- [Prefactor vs Respan API + MCP](https://www.anchorterminal.com/compare/prefactor-vs-respan.md)\n- [Pydantic Logfire vs Respan API + MCP](https://www.anchorterminal.com/compare/pydantic-logfire-vs-respan.md)\n- [Respan API + MCP vs W\u0026B Weave](https://www.anchorterminal.com/compare/respan-vs-wandb-weave.md)\n- [DeepEval vs Respan API + MCP](https://www.anchorterminal.com/compare/deepeval-vs-respan.md)\n- [Navige vs Respan API + MCP](https://www.anchorterminal.com/compare/navige-vs-respan.md)\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": "2026-11-02", "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": "Agent Tree vs Respan API + MCP", "url": "" } ], "description": "Respan scores 65.7 (B) to Agent Tree's 52.5 (D) for agent tracing. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Agent Tree D 52.5", "Respan API + MCP B 65.7", "scores" ], "h1": "Agent Tree vs Respan API + MCP", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/agent-tree-vs-respan", "published": "2026-10-01", "section": "tools", "title": "Agent Tree vs Respan for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-01", "url": "https://www.anchorterminal.com/compare/agent-tree-vs-respan" }, "tokens": { "markdown": 4600, "slim": 2530 }, "version": 1 }