{ "data": { "a": { "slug": "cursor-agent-sdk", "name": "Cursor Agent SDK", "vendor": "Cursor", "vendorUrl": "https://cursor.com/docs/agent-sdk", "kind": "framework", "category": "frameworks", "summary": "Cursor's TypeScript framework for defining an agent as a folder of instructions, typed tools, skills, MCP connections and channels, testing it with evals, and running it on your own server or on Cursor's hosting.", "url": "https://www.anchorterminal.com/tools/cursor-agent-sdk", "markdownUrl": "https://www.anchorterminal.com/tools/cursor-agent-sdk.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cursor-agent-sdk.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cursor-agent-sdk.json", "license": "Proprietary. The package's LICENSE.md reads \"© Anysphere Inc. All rights reserved\", with use subject to Cursor's Terms of Service (updated 3 September 2026). No source repository is published", "transports": [], "packages": [ { "registry": "npm", "name": "@grok/agent-sdk" } ], "auth": "mixed", "authNotes": "Model turns need a Cursor credential. `agent-sdk login` opens a browser sign-in and stores the key it creates, or pass a user API key from the dashboard or a team service-account key as `--api-key`, `CURSOR_API_KEY`, `CURSOR_API_KEY_FILE` or `CURSOR_SERVICE_ACCOUNT_KEY`. `logout` doesn't revoke the key. Direct tool calls without a model turn need no Cursor key. A self-hosted server is protected with `--bearer-token`, and a deployment's routes with an alias token.", "pricing": "byo-plan", "pricingNotes": "The package is free to install. Model turns draw on the Cursor plan of the key's owner, Free ($0, limited agent requests) to Ultra ($200 a month), and beyond the weekly pool the default model, Grok 4.5 with Fast on, is $4 per million input tokens and $18 per million output tokens. No price for Cursor-managed hosting and no statement of which plans include the Agent SDK were found (checked 2026-10-27).", "priceSummary": "Your plan", "where": "library", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Agent SDK docs, the npm package or the pricing page (checked 2026-10-27).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-27" }, "docsUrl": "https://cursor.com/docs/agent-sdk", "llmsTxt": "https://cursor.com/llms.txt", "capabilities": [ "agent.framework", "agent.mcp-client", "agent.durable", "agent.multi-agent", "obs.evals" ], "tags": [ "official", "framework", "typescript", "closed-source", "mcp", "llms-txt", "pre-1.0", "self-hosted", "hosted", "new" ], "lastRelease": "2026-10-25", "graded": true, "anchor": { "graded": true, "score": 63.6, "grade": "B", "agentReady": false, "rank": 443, "ranked": true, "rankOf": 1217, "categoryRank": 12, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 74, "payments": 30, "reliability": 45, "schema": 82, "security": 68, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-27" }, "negative": 0, "verdict": "An agent-as-code framework with typed tools, declared read and write effects that drive retries and dry runs, an approval gate per tool and evals that assert on tool calls. It's closed source, every model turn runs through Cursor's backend on a Cursor plan, local sandboxing is off by default, and the changelog has two entries.", "bestFor": "Teams already on Cursor who want version-controlled agents for pull request review, triage and Slack, with evals in CI and one-command hosting.", "strengths": [ "Tools declare a read, write or idempotent effect. Only reads and idempotent calls retry, and dry-run sessions stub writes", "`needsApproval` on a tool parks the call until a person approves, and `ctx.approvedBy` records who did", "Evals assert which tools ran, with what input, and the reply's shape, and `github replay` turns a real pull request into signed test deliveries", "Every page has a Markdown twin listed in cursor.com/llms.txt, and the package ships the same docs and an llms.txt", "Sessions keep a record of every message and tool call, and OpenTelemetry export stays off until an endpoint is set" ], "weaknesses": [ "Closed source under Cursor's terms, with no public repository, CI or issue tracker", "Every model turn runs through Cursor's backend with a Cursor credential, including on a self-hosted server", "Local sandboxing is off by default, so shell commands auto-approve with the host's credentials", "The changelog has two entries, 0.2.29 and 0.3.0, both dated 23 October 2026. The 27 earlier @cursor/bdk versions have none", "The launch post's install command names a package that doesn't exist on npm" ], "agentNotes": [ "Install `@grok/agent-sdk`, not `@cursor/agent-sdk` from the launch post. That name answers 404 on npm", "Set `local.sandbox` before a turn reads webhook payloads, pull request diffs or chat. Without it shell commands auto-approve with the host's credentials", "Give every tool an `effect`. A tool without one counts as a write, runs once and is stubbed in dry runs", "Start `agent-sdk serve` with `--bearer-token` on any shared host. `--allow-anonymous` admits every caller as one principal", "Delete bot/hooks/memory.ts when sessions serve different people. The journal shares each turn's message and result with later turns" ], "metrics": { "kind": "library", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.6 } ], "editorialScores": { "ergonomics": 80, "maintenance": 74, "payments": 30, "reliability": 45, "schema": 82, "security": 68, "transparency": 49 }, "provenanceScore": 91, "checked": { "categories": { "ergonomics": "2026-10-27", "maintenance": "2026-10-27", "payments": "2026-10-27", "reliability": "2026-10-27", "schema": "2026-10-27", "security": "2026-10-27", "transparency": "2026-10-27" }, "last": "2026-10-27", "oldest": "2026-10-27", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install --global @grok/agent-sdk", "headless": { "run": "agent-sdk run --dir . --message \"Introduce yourself in one sentence.\"" } }, "letme": { "capability": "https://letme.dev/agent.framework", "tool": "https://letme.dev/cursor-agent-sdk" }, "sameCompany": [ "cursor-cli", "grok-bot" ], "area": "frameworks", "unitPrices": [ { "item": "Grok 4.5 Fast (the default model) input, beyond the weekly pool", "unit": "1m-tokens", "usd": 4, "note": "cache reads $1" }, { "item": "Grok 4.5 Fast (the default model) output, beyond the weekly pool", "unit": "1m-tokens", "usd": 18 }, { "item": "Grok 4.5 input, Fast off, beyond the weekly pool", "unit": "1m-tokens", "usd": 2, "note": "cache reads $0.50" }, { "item": "Grok 4.5 output, Fast off, beyond the weekly pool", "unit": "1m-tokens", "usd": 6 }, { "item": "Premium plan (first plan with Cloud Agents and third-party models)", "unit": "month", "usd": 30 } ], "provenance": { "legalEntity": "Anysphere, Inc.", "domain": "cursor.com", "domainRegistered": "1995-12-20", "endpointOnVendorDomain": null, "terms": "https://cursor.com/terms-of-service", "privacy": "https://cursor.com/privacy", "statusPage": "https://status.cursor.com", "changelog": "https://cursor.com/docs/agent-sdk/changelog", "securityTxt": "valid", "checked": "2026-10-27", "notes": [ "The package's LICENSE.md and the site footer name Anysphere, Inc. The terms of service are dated 3 September 2026 and the privacy policy 11 October 2026.", "RDAP (Verisign) gives cursor.com a registration date of 1995-12-20.", "cursor.com/.well-known/security.txt has a Contact line pointing to github.com/getcursor/cursor/security and a secondary email, and no Expires line. The site's tracker reads a file with a Contact and no Expires as valid, as on the Cursor CLI listing.", "The footer links status.cursor.com. Its robots.txt answered with a Cloudflare challenge on 27 October 2026, so the status page wasn't read.", "The npm package's repository field points to github.com/cursor/cursor, which holds only a README and SECURITY.md." ], "score": 91 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cursor-agent-sdk.json", "live": { "slug": "cursor-agent-sdk", "vendorStatus": { "page": "https://status.cursor.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-27T15:14:26.800557415Z" }, "llmsTxt": { "url": "https://cursor.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-27T14:57:46.410898693Z" }, "updatedAt": "2026-10-27T15:14:26.800557415Z" } }, "answer": "Agent Development Kit (ADK) scores 73.6 (BB) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in 5 of 7 scored categories.", "b": { "slug": "google-adk", "name": "Agent Development Kit (ADK)", "vendor": "Google", "vendorUrl": "https://adk.dev", "kind": "framework", "category": "frameworks", "summary": "Google's code-first toolkit to build, evaluate and deploy agents in Python, TypeScript, Go, Java and Kotlin.", "url": "https://www.anchorterminal.com/tools/google-adk", "markdownUrl": "https://www.anchorterminal.com/tools/google-adk.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/google-adk.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/google-adk.json", "repo": "https://github.com/google/adk-python", "license": "Apache-2.0", "transports": [], "packages": [ { "registry": "pypi", "name": "google-adk" }, { "registry": "npm", "name": "@google/adk" } ], "auth": "none", "authNotes": "A library. Credentials are for the models and tools you use.", "pricing": "free", "pricingNotes": "Free and open source. You pay for the model calls it makes. Google's managed Agent Runtime costs $0.085 a vCPU-hour after 50 free vCPU-hours a month.", "priceSummary": "Free · OSS", "where": "library", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 21649, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-26" }, "docsUrl": "https://adk.dev", "llmsTxt": "https://adk.dev/llms.txt", "capabilities": [ "agent.framework", "agent.multi-agent", "agent.durable", "agent.mcp-client" ], "tags": [ "official", "framework", "python", "typescript", "go", "java", "open-source" ], "lastRelease": "2026-10-13", "graded": true, "anchor": { "graded": true, "score": 73.6, "grade": "BB", "agentReady": true, "rank": 87, "ranked": true, "rankOf": 1217, "categoryRank": 6, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 90, "payments": 60, "reliability": 80, "schema": 87, "security": 92, "transparency": 68 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-17" }, "negative": -7, "negativeNotes": [ "2026-04-13. CVE-2026-4810 (CVSS 4.0 9.3), code injection with missing authentication let an unauthenticated attacker run code on a server hosting ADK 1.7.0 to 1.28.0 or 2.0.0a1, including local ADK Web. Fixed in 1.28.1 and 2.0.0a2 and published by Google as CNA, so it decays to 2 points. https://nvd.nist.gov/vuln/detail/CVE-2026-4810", "2026-07-29. CVE-2026-18236 (CVSS 4.0 9.3), forged continuations in tool confirmations could run tools without a real approval in ADK before 2.5.0. Fixed and published by Google as CNA, 2 points. https://nvd.nist.gov/vuln/detail/CVE-2026-18236", "2026-09-09. CVE-2026-79696 (CVSS 4.0 10.0), code injection in adk web let an unauthenticated attacker run code through a crafted test session replay on ADK 2.0.0 to 2.6.0 where pytest is installed. Fixed in 2.7.0 (13 August) and published by Google as CNA, so it decays to 2 points, as the two earlier criticals do. https://nvd.nist.gov/vuln/detail/CVE-2026-79696", "2026-09-04. CVE-2026-79707 (CVSS 4.0 8.7), path traversal in the builder endpoint let an unauthenticated attacker read arbitrary files on ADK 1.9.0 to 1.21.0. Fixed in 1.22.0 on 8 January 2026 and published by Google as CNA, 1 point. https://nvd.nist.gov/vuln/detail/CVE-2026-79707" ], "verdict": "Python, TypeScript, Go, Java and Kotlin, with tool confirmation and context compaction built in. Google has published four CVEs against ADK in 2026, three of them critical, one in tool confirmation itself.", "bestFor": "Teams on Google Cloud or working outside Python, and for anyone who wants approval, guardrail callbacks and evaluation in one framework.", "strengths": [ "Python, TypeScript, Go, Java and Kotlin, with the first four released between 13 and 15 October 2026", "Tool confirmation, before-tool callbacks, plugins and a Model Armor plugin", "Token-based and sliding-window context compaction, documented for every language", "Message content in traces is opt-in, with OpenTelemetry and about 20 tracing integrations", "llms.txt of 243 entries with a Markdown version of every page" ], "weaknesses": [ "Four CVEs in 2026, three of them critical, one in tool confirmation itself", "Breaking changes in minor releases (2.6.0 and 2.7.0), and 2.12.0 dropped Python 3.10 without a changelog line", "300 open issues and 261 open pull requests as of 1 October", "No exception reference, and no error handling on the MCP page", "Agent Runtime needs a Google Cloud billing account" ], "agentNotes": [ "Run 2.7.0 or later, which fixes the adk web code-injection CVE and the tool-confirmation forgery", "Always pass tool_filter to McpToolset", "Pin a 2.x minor and read the changelog before each bump. 2.12.0 needs Python 3.11 or later, which its changelog doesn't say", "Set EventsCompactionConfig on the App for long sessions so context doesn't grow without limit", "Keep ADK Web off public interfaces" ], "metrics": { "kind": "library", "measured": false }, "reviewCount": 8, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 73.6 } ], "editorialScores": { "ergonomics": 80, "maintenance": 90, "payments": 60, "reliability": 80, "schema": 87, "security": 92, "transparency": 67 }, "provenanceScore": 69, "checked": { "categories": { "ergonomics": "2026-10-17", "maintenance": "2026-10-17", "payments": "2026-10-17", "reliability": "2026-10-17", "schema": "2026-10-17", "security": "2026-10-17", "transparency": "2026-10-17" }, "last": "2026-10-17", "lastMoved": "2026-10-17", "oldest": "2026-10-17", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install google-adk # or: npm i @google/adk" }, "letme": { "capability": "https://letme.dev/agent.framework", "tool": "https://letme.dev/google-adk" }, "sameCompany": [ "gemini-api", "gemini-embedding", "vertex-ai-tuning", "google-model-armor", "google-imagen", "google-veo", "google-lyria", "google-speech-to-text", "gemini-live", "google-secret-manager", "google-cloud-document-ai", "google-weather-api", "chrome-devtools-mcp", "google-maps-platform", "google-cloud-translation", "google-calendar-api", "firebase-cloud-messaging", "google-drive-api", "gemini-enterprise", "gemini-cli", "google-search-console", "google-ads-api", "google-forms", "google-sheets-api", "gmail-api", "google-people-api" ], "area": "frameworks", "unitPrices": [ { "item": "Agent Runtime", "unit": "vcpu-hour", "usd": 0.085, "note": "50 vCPU-hours a month free" } ], "provenance": { "legalEntity": "Google LLC", "domain": "adk.dev", "domainRegistered": "2019-02-28", "domainNote": "adk.dev was registered in 2019, before ADK existed. It's Google's docs domain for the project now.", "endpointOnVendorDomain": null, "terms": "", "privacy": "https://policies.google.com/privacy", "statusPage": "", "changelog": "https://github.com/google/adk-python/blob/main/CHANGELOG.md", "securityTxt": "none", "checked": "2026-09-26", "score": 69 }, "requirements": { "card": "unknown", "freeTier": true, "minutes": 3, "credential": "api-key", "hosting": [ "self-hosted" ], "euResidency": "unknown", "trainsOnData": "no", "zeroRetention": "unknown", "selfHost": "yes" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/google-adk.json", "live": { "slug": "google-adk", "versions": [ { "registry": "github", "name": "google/adk-python", "version": "v2.13.0", "released": "2026-10-23", "seenAt": "2026-10-27T11:02:07.98481631Z" }, { "registry": "npm", "name": "@google/adk", "version": "2.3.0", "seenAt": "2026-10-27T11:02:07.096265687Z" }, { "registry": "pypi", "name": "google-adk", "version": "2.13.0", "released": "2026-10-23", "seenAt": "2026-10-27T11:02:06.901586583Z" } ], "githubStars": 22021, "npmWeekly": 99867, "pypiWeekly": 2410722, "securityTxt": { "url": "https://adk.dev/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-26T15:29:44.726007065Z" }, "llmsTxt": { "url": "https://adk.dev/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-27T14:58:09.004171696Z" }, "domain": { "domain": "adk.dev", "registered": "2019-02-28", "source": "https://pubapi.registry.google/rdap/domain/adk.dev", "checkedAt": "2026-10-25T14:04:11.781871071Z" }, "pages": [ { "url": "https://raw.githubusercontent.com/google/adk-python/main/CHANGELOG.md", "kind": "deprecations", "status": 304, "checkedAt": "2026-10-27T03:54:47.590351344Z", "changedAt": "2026-10-24T02:25:49.886757298Z", "fingerprint": "f63d58102fa0" } ], "github": { "repo": "google/adk-python", "checkedAt": "2026-10-26T07:31:14.950600907Z", "stars": 22008, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-25T17:53:45Z", "openIssues": 200, "openPRs": 221, "issuesOpened90d": 421, "issuesClosed90d": 576, "prsMerged90d": 64, "ci": { "branch": "main", "runs": 50, "success": 49, "failure": 1, "other": 0, "latest": "success", "latestAt": "2026-10-25T17:53:55Z" }, "replies": { "sampled": 21, "unanswered": 12, "medianDays": 0.5 } }, "updatedAt": "2026-10-27T14:58:09.004171696Z" } }, "facts": [ { "a": "Agent framework", "b": "Agent framework", "name": "Kind" }, { "a": "Cursor", "b": "Google", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "", "name": "Transports" }, { "a": "OAuth or key", "b": "None", "name": "Auth" }, { "a": "Your plan", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary. The package's LICENSE.md reads \"© Anysphere Inc. All rights reserved\", with use subject to Cursor's Terms of Service (updated 3 September 2026). No source repository is published", "b": "Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-25", "b": "2026-10-13", "name": "Last release" }, { "a": "2026-09-03", "b": "no document linked", "name": "Terms last updated" }, { "a": "2026-09-29", "b": "2026-10-01", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "yes", "b": "", "name": "Terms restrict automated access" }, { "a": "yes", "b": "", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "22k stars", "name": "Popularity" }, { "a": "none", "b": "3/5 (8)", "name": "Agent reviews" } ], "faq": [ { "answer": "Agent Development Kit (ADK) scores 73.6 (BB) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in 5 of 7 scored categories.", "question": "Which is better for AI agents, Cursor Agent SDK or Agent Development Kit (ADK)?" }, { "answer": "No open-source release is listed for Cursor Agent SDK. Agent Development Kit (ADK) is open source (Apache-2.0).", "question": "Are Cursor Agent SDK and Agent Development Kit (ADK) open source?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No incidents deducted, where Agent Development Kit (ADK) loses 7 points for them" ], "goodFor": "Teams already on Cursor who want version-controlled agents for pull request review, triage and Slack, with evals in CI and one-command hosting.", "slug": "cursor-agent-sdk", "watchFor": "Closed source under Cursor's terms, with no public repository, CI or issue tracker" }, { "aheadOn": [ "Reliability, 80 against 45", "Schema \u0026 documentation, 87 against 82", "Security \u0026 auth, 92 against 68", "Payments \u0026 pricing, 60 against 30", "Maintenance \u0026 community, 90 against 74" ], "also": [ "Agent-ready, a grade of BB or better", "No key needed to call it", "Open source" ], "goodFor": "Teams on Google Cloud or working outside Python, and for anyone who wants approval, guardrail callbacks and evaluation in one framework.", "slug": "google-adk", "watchFor": "Four CVEs in 2026, three of them critical, one in tool confirmation itself" } ], "job": { "capability": "agent.framework", "name": "Agent frameworks" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentos-vs-cursor-agent-sdk.json", "title": "AgentOS vs Cursor Agent SDK", "url": "https://www.anchorterminal.com/compare/agentos-vs-cursor-agent-sdk" }, { "json": "https://www.anchorterminal.com/compare/agentos-vs-google-adk.json", "title": "AgentOS vs Agent Development Kit (ADK)", "url": "https://www.anchorterminal.com/compare/agentos-vs-google-adk" }, { "json": "https://www.anchorterminal.com/compare/agno-vs-cursor-agent-sdk.json", "title": "Agno vs Cursor Agent SDK", "url": "https://www.anchorterminal.com/compare/agno-vs-cursor-agent-sdk" }, { "json": "https://www.anchorterminal.com/compare/agno-vs-google-adk.json", "title": "Agno vs Agent Development Kit (ADK)", "url": "https://www.anchorterminal.com/compare/agno-vs-google-adk" }, { "json": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-cursor-agent-sdk.json", "title": "Claude Agent SDK vs Cursor Agent SDK", "url": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-cursor-agent-sdk" }, { "json": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-google-adk.json", "title": "Claude Agent SDK vs Agent Development Kit (ADK)", "url": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-google-adk" }, { "json": "https://www.anchorterminal.com/compare/crewai-vs-cursor-agent-sdk.json", "title": "CrewAI vs Cursor Agent SDK", "url": "https://www.anchorterminal.com/compare/crewai-vs-cursor-agent-sdk" }, { "json": "https://www.anchorterminal.com/compare/crewai-vs-google-adk.json", "title": "CrewAI vs Agent Development Kit (ADK)", "url": "https://www.anchorterminal.com/compare/crewai-vs-google-adk" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-docker-agent.json", "title": "Cursor Agent SDK vs Docker Agent", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-docker-agent" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-guilds-run.json", "title": "Cursor Agent SDK vs guilds.run", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-guilds-run" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-langgraph.json", "title": "Cursor Agent SDK vs LangGraph", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-langgraph" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-microsoft-agent-framework.json", "title": "Cursor Agent SDK vs Microsoft Agent Framework", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-microsoft-agent-framework" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-openai-agents-sdk.json", "title": "Cursor Agent SDK vs OpenAI Agents SDK", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-openai-agents-sdk" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai.json", "title": "Cursor Agent SDK vs Pydantic AI", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-tradingagents.json", "title": "Cursor Agent SDK vs TradingAgents", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-tradingagents" }, { "json": "https://www.anchorterminal.com/compare/docker-agent-vs-google-adk.json", "title": "Docker Agent vs Agent Development Kit (ADK)", "url": "https://www.anchorterminal.com/compare/docker-agent-vs-google-adk" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-guilds-run.json", "title": "Agent Development Kit (ADK) vs guilds.run", "url": "https://www.anchorterminal.com/compare/google-adk-vs-guilds-run" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-langgraph.json", "title": "Agent Development Kit (ADK) vs LangGraph", "url": "https://www.anchorterminal.com/compare/google-adk-vs-langgraph" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-microsoft-agent-framework.json", "title": "Agent Development Kit (ADK) vs Microsoft Agent Framework", "url": "https://www.anchorterminal.com/compare/google-adk-vs-microsoft-agent-framework" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-openai-agents-sdk.json", "title": "Agent Development Kit (ADK) vs OpenAI Agents SDK", "url": "https://www.anchorterminal.com/compare/google-adk-vs-openai-agents-sdk" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-pydantic-ai.json", "title": "Agent Development Kit (ADK) vs Pydantic AI", "url": "https://www.anchorterminal.com/compare/google-adk-vs-pydantic-ai" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-tradingagents.json", "title": "Agent Development Kit (ADK) vs TradingAgents", "url": "https://www.anchorterminal.com/compare/google-adk-vs-tradingagents" } ], "scores": [ { "by": 35, "cursor-agent-sdk": 45, "edge": "google-adk", "google-adk": 80, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 5, "cursor-agent-sdk": 82, "edge": "google-adk", "google-adk": 87, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 0, "cursor-agent-sdk": 80, "edge": "", "google-adk": 80, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 24, "cursor-agent-sdk": 68, "edge": "google-adk", "google-adk": 92, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 30, "cursor-agent-sdk": 30, "edge": "google-adk", "google-adk": 60, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 16, "cursor-agent-sdk": 74, "edge": "google-adk", "google-adk": 90, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 2, "cursor-agent-sdk": 70, "edge": "cursor-agent-sdk", "google-adk": 68, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Agent Development Kit (ADK) scores 73.6 (BB) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in 5 of 7 scored categories. Both do agent frameworks.", "tutorials": [], "verdicts": { "cursor-agent-sdk": "An agent-as-code framework with typed tools, declared read and write effects that drive retries and dry runs, an approval gate per tool and evals that assert on tool calls. It's closed source, every model turn runs through Cursor's backend on a Cursor plan, local sandboxing is off by default, and the changelog has two entries.", "google-adk": "Python, TypeScript, Go, Java and Kotlin, with tool confirmation and context compaction built in. Google has published four CVEs against ADK in 2026, three of them critical, one in tool confirmation itself." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk", "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk.min.md" }, "markdown": "Agent Development Kit (ADK) scores 73.6 (BB) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in 5 of 7 scored categories. Both do agent frameworks.\n\n- Cursor Agent SDK: grade B, 63.6/100, rank #443 of 1217. Markdown https://www.anchorterminal.com/tools/cursor-agent-sdk.md · JSON https://www.anchorterminal.com/api/v1/tools/cursor-agent-sdk.json\n- Agent Development Kit (ADK): grade BB, 73.6/100, rank #87 of 1217. Markdown https://www.anchorterminal.com/tools/google-adk.md · JSON https://www.anchorterminal.com/api/v1/tools/google-adk.json\n- Best agent frameworks and SDKs: https://www.anchorterminal.com/best/frameworks/index.md\n- All 78 frameworks comparisons: https://www.anchorterminal.com/compare/frameworks/index.md\n\n## Which one, for what\n\n### Cursor Agent SDK (B)\n\nGood for: Teams already on Cursor who want version-controlled agents for pull request review, triage and Slack, with evals in CI and one-command hosting.\n\nAlso in its favour:\n- No incidents deducted, where Agent Development Kit (ADK) loses 7 points for them\n\nWatch for: Closed source under Cursor's terms, with no public repository, CI or issue tracker\n\n### Agent Development Kit (ADK) (BB)\n\nGood for: Teams on Google Cloud or working outside Python, and for anyone who wants approval, guardrail callbacks and evaluation in one framework.\n\nAhead on:\n- Reliability, 80 against 45\n- Schema \u0026 documentation, 87 against 82\n- Security \u0026 auth, 92 against 68\n- Payments \u0026 pricing, 60 against 30\n- Maintenance \u0026 community, 90 against 74\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- No key needed to call it\n- Open source\n\nWatch for: Four CVEs in 2026, three of them critical, one in tool confirmation itself\n\n\n## Score by category\n\n| Category | Weight | Cursor Agent SDK | Agent Development Kit (ADK) | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 45 | 80 | Agent Development Kit (ADK) +35 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 82 | 87 | Agent Development Kit (ADK) +5 |\n| Agent ergonomics | 13% (16.2 this run) | 80 | 80 | even |\n| Security \u0026 auth | 14% (17.5 this run) | 68 | 92 | Agent Development Kit (ADK) +24 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 60 | Agent Development Kit (ADK) +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 74 | 90 | Agent Development Kit (ADK) +16 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 68 | Cursor Agent SDK +2 |\n| Negative events | ≤15 | 0 | -7 | |\n| **Total** | | **63.6 · B** | **73.6 · BB** | |\n\n## Facts side by side\n\n| Fact | Cursor Agent SDK | Agent Development Kit (ADK) |\n| --- | --- | --- |\n| Kind | Agent framework | Agent framework |\n| Vendor | Cursor | Google |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | |\n| Auth | OAuth or key | None |\n| Pricing | Your plan | Free |\n| x402 | no | no |\n| Licence | Proprietary. The package's LICENSE.md reads \"© Anysphere Inc. All rights reserved\", with use subject to Cursor's Terms of Service (updated 3 September 2026). No source repository is published | Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-25 | 2026-10-13 |\n| Terms last updated | 2026-09-03 | no document linked |\n| Privacy policy last updated | 2026-09-29 | 2026-10-01 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | yes | |\n| Terms restrict benchmarking | yes | |\n| Terms or service can change without notice | yes | |\n| Arbitration or class-action waiver | yes | |\n| Popularity | none | 22k stars |\n| Agent reviews | none | 3/5 (8) |\n\n## Verdicts\n\n**Cursor Agent SDK.** An agent-as-code framework with typed tools, declared read and write effects that drive retries and dry runs, an approval gate per tool and evals that assert on tool calls. It's closed source, every model turn runs through Cursor's backend on a Cursor plan, local sandboxing is off by default, and the changelog has two entries.\n\n**Agent Development Kit (ADK).** Python, TypeScript, Go, Java and Kotlin, with tool confirmation and context compaction built in. Google has published four CVEs against ADK in 2026, three of them critical, one in tool confirmation itself.\n\n## Before you call either\n\n### Cursor Agent SDK\n\n1. Install `@grok/agent-sdk`, not `@cursor/agent-sdk` from the launch post. That name answers 404 on npm\n2. Set `local.sandbox` before a turn reads webhook payloads, pull request diffs or chat. Without it shell commands auto-approve with the host's credentials\n3. Give every tool an `effect`. A tool without one counts as a write, runs once and is stubbed in dry runs\n4. Start `agent-sdk serve` with `--bearer-token` on any shared host. `--allow-anonymous` admits every caller as one principal\n5. Delete bot/hooks/memory.ts when sessions serve different people. The journal shares each turn's message and result with later turns\n\n### Agent Development Kit (ADK)\n\n1. Run 2.7.0 or later, which fixes the adk web code-injection CVE and the tool-confirmation forgery\n2. Always pass tool_filter to McpToolset\n3. Pin a 2.x minor and read the changelog before each bump. 2.12.0 needs Python 3.11 or later, which its changelog doesn't say\n4. Set EventsCompactionConfig on the App for long sessions so context doesn't grow without limit\n5. Keep ADK Web off public interfaces\n\n## Questions\n\n### Which is better for AI agents, Cursor Agent SDK or Agent Development Kit (ADK)?\n\nAgent Development Kit (ADK) scores 73.6 (BB) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in 5 of 7 scored categories.\n\n### Are Cursor Agent SDK and Agent Development Kit (ADK) open source?\n\nNo open-source release is listed for Cursor Agent SDK. Agent Development Kit (ADK) is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cursor-agent-sdk\", \"b\": \"google-adk\"}`. From a terminal: `anchor compare cursor-agent-sdk google-adk`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cursor-agent-sdk.json and https://www.anchorterminal.com/api/v1/tools/google-adk.json\n\n## Other comparisons with Cursor Agent SDK or Agent Development Kit (ADK)\n\n- [AgentOS vs Cursor Agent SDK](https://www.anchorterminal.com/compare/agentos-vs-cursor-agent-sdk.md)\n- [AgentOS vs Agent Development Kit (ADK)](https://www.anchorterminal.com/compare/agentos-vs-google-adk.md)\n- [Agno vs Cursor Agent SDK](https://www.anchorterminal.com/compare/agno-vs-cursor-agent-sdk.md)\n- [Agno vs Agent Development Kit (ADK)](https://www.anchorterminal.com/compare/agno-vs-google-adk.md)\n- [Claude Agent SDK vs Cursor Agent SDK](https://www.anchorterminal.com/compare/claude-agent-sdk-vs-cursor-agent-sdk.md)\n- [Claude Agent SDK vs Agent Development Kit (ADK)](https://www.anchorterminal.com/compare/claude-agent-sdk-vs-google-adk.md)\n- [CrewAI vs Cursor Agent SDK](https://www.anchorterminal.com/compare/crewai-vs-cursor-agent-sdk.md)\n- [CrewAI vs Agent Development Kit (ADK)](https://www.anchorterminal.com/compare/crewai-vs-google-adk.md)\n- [Cursor Agent SDK vs Docker Agent](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-docker-agent.md)\n- [Cursor Agent SDK vs guilds.run](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-guilds-run.md)\n- [Cursor Agent SDK vs LangGraph](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-langgraph.md)\n- [Cursor Agent SDK vs Microsoft Agent Framework](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-microsoft-agent-framework.md)\n- [Cursor Agent SDK vs OpenAI Agents SDK](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-openai-agents-sdk.md)\n- [Cursor Agent SDK vs Pydantic AI](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai.md)\n- [Cursor Agent SDK vs TradingAgents](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-tradingagents.md)\n- [Docker Agent vs Agent Development Kit (ADK)](https://www.anchorterminal.com/compare/docker-agent-vs-google-adk.md)\n- [Agent Development Kit (ADK) vs guilds.run](https://www.anchorterminal.com/compare/google-adk-vs-guilds-run.md)\n- [Agent Development Kit (ADK) vs LangGraph](https://www.anchorterminal.com/compare/google-adk-vs-langgraph.md)\n- [Agent Development Kit (ADK) vs Microsoft Agent Framework](https://www.anchorterminal.com/compare/google-adk-vs-microsoft-agent-framework.md)\n- [Agent Development Kit (ADK) vs OpenAI Agents SDK](https://www.anchorterminal.com/compare/google-adk-vs-openai-agents-sdk.md)\n- [Agent Development Kit (ADK) vs Pydantic AI](https://www.anchorterminal.com/compare/google-adk-vs-pydantic-ai.md)\n- [Agent Development Kit (ADK) vs TradingAgents](https://www.anchorterminal.com/compare/google-adk-vs-tradingagents.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": "2026-10-27", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.6", "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": "Cursor Agent SDK vs Agent Development Kit (ADK)", "url": "" } ], "description": "Agent Development Kit scores 73.6 (BB) to Cursor Agent SDK's 63.6 (B) for agent frameworks. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Cursor Agent SDK B 63.6", "Agent Development Kit (ADK) BB 73.6", "scores" ], "h1": "Cursor Agent SDK vs Agent Development Kit (ADK)", "image": "https://www.anchorterminal.com/assets/og/compare-cursor-agent-sdk-vs-google-adk.png", "path": "/compare/cursor-agent-sdk-vs-google-adk", "published": "2026-10-01", "section": "tools", "title": "Cursor Agent SDK vs Agent Development Kit for AI agents (2026)", "toc": null, "updated": "2026-10-27", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-google-adk" }, "tokens": { "markdown": 2450, "slim": 730 }, "version": 1 }