{
  "data": {
    "a": {
      "slug": "braintrust",
      "name": "Braintrust API + MCP",
      "vendor": "Braintrust",
      "vendorUrl": "https://www.braintrust.dev",
      "kind": "http-api",
      "category": "agent-observability",
      "summary": "Hosted tracing, logging and evaluation for LLM apps and agents, with experiments, datasets, prompts, online scorers and a model gateway.",
      "url": "https://www.anchorterminal.com/tools/braintrust",
      "markdownUrl": "https://www.anchorterminal.com/tools/braintrust.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/braintrust.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/braintrust.json",
      "repo": "https://github.com/braintrustdata/braintrust-sdk-javascript",
      "license": "Apache-2.0 (SDKs only, platform closed source)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.braintrust.dev/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "braintrust"
        },
        {
          "registry": "pypi",
          "name": "braintrust"
        }
      ],
      "auth": "mixed",
      "authNotes": "REST API and SDKs take an org API key as a Bearer token (BRAINTRUST_API_KEY). The hosted MCP server accepts OAuth 2.0 with dynamic client registration or the same API key, and acts with the permissions of the key's account. EU and self-hosted data planes have their own API and MCP URLs.",
      "pricing": "freemium",
      "pricingNotes": "Starter is free with no card, unlimited users, 1 GB processed data and 10,000 scores a month, 14-day retention and $10 of model credit. Overage $4 a GB and $2.50 per 1,000 scores. Pro $249 a month with 5 GB, 50,000 scores, $100 of model credit and 30-day retention, then $3 a GB, $1.50 per 1,000 scores and $0.50 a GB a month for longer retention. Qualifying startups can get Pro free for 6 to 12 months. Enterprise is custom and adds on-prem or hybrid deployment, a BAA and SLAs (https://www.braintrust.dev/pricing).",
      "priceSummary": "$249 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 42,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 2018529,
        "pypiWeekly": 1701906,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://www.braintrust.dev/docs",
      "llmsTxt": "https://www.braintrust.dev/docs/llms.txt",
      "openapi": "https://www.braintrust.dev/docs/openapi.json",
      "registryName": "io.github.braintrustdata/braintrust",
      "capabilities": [
        "obs.traces",
        "obs.evals",
        "obs.prompts",
        "obs.gateway",
        "obs.datasets"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "python",
        "typescript",
        "closed-source",
        "enterprise"
      ],
      "lastRelease": "2026-10-01",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 61.3,
        "grade": "C",
        "agentReady": false,
        "rank": 229,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 66,
          "maintenance": 85,
          "payments": 40,
          "reliability": 61,
          "schema": 85,
          "security": 58,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "Fixed 2026-07-16. The Python SDK's LiteLLM instrumentation in versions 0.2.0 to 0.27.x wrote provider credentials into trace metadata, among them API keys, `Authorization` headers, Azure tokens and AWS access and secret keys. Fixed in 0.28.0 with a metadata allowlist, and a knowledge-base page tells users to rotate. It reads as an advisory but isn't filed as one and carries no date. -2 after decay (https://braintrust.dev/docs/kb/litellm-instrumentation-may-record-provider-credentials.md)",
          "Fixed 2026-07-16. The TypeScript SDK from 0.4.0 to 3.23.0 recorded API keys passed to the Claude Agent SDK through `options.apiKey` into trace metadata. The 3.23.1 changelog line calls the fix \"Clean up span metadata\", and only the knowledge-base page explains the exposure and asks for rotation. -2 after decay (https://braintrust.dev/docs/kb/claude-agent-sdk-api-keys-recorded-in-trace-metadata.md)"
        ],
        "verdict": "OpenAPI 3.0.3 spec with 75 paths, 429 and `Retry-After` declared on 154 operations. Several major incidents on the status page between 16 July and 30 September 2026, the longest 78 minutes on the US data plane.",
        "strengths": [
          "OpenAPI 3.0.3 spec with 75 paths, 429 and `Retry-After` declared on 154 operations",
          "Hosted MCP server with 42 tools, OAuth 2.0 or API key, and `sql_query` that hands results over 1 MB back as a signed URL",
          "Service tokens can be scoped to single projects through permission groups on every plan",
          "Starter is free with no card, unlimited users and published per-GB and per-score overage prices",
          "TypeScript and Python SDKs both released on 2026-10-01, with 34 releases between them since 16 July"
        ],
        "weaknesses": [
          "Several major incidents on the status page between 16 July and 30 September 2026, the longest 78 minutes on the US data plane",
          "Python SDK up to 0.27.x and TypeScript SDK up to 3.23.0 recorded provider credentials in trace metadata, fixed on 2026-07-16 without a formal advisory",
          "All 42 MCP tools load by default and write tools act with the full permissions of the signed-in account",
          "Only BTQL has a published rate limit, about 20 queries a minute on Starter and Pro",
          "Privacy notice dates from September 2023 and excludes customer data. Starter keeps data for 14 days"
        ],
        "agentNotes": [
          "Connect a project-scoped service token rather than a personal key, because MCP write tools act with the key's full permissions",
          "Set the client to confirm MCP write tools such as `edit_dataset_rows` and `create_threshold_alert`. The server has no read-only mode",
          "Cache `sql_query` results. Starter and Pro allow about 20 queries a minute and return 429",
          "Pass `preview_length: -1` to `sql_query` only when full values are needed, and fetch `overflow_url` when a result passes 1 MB",
          "Upgrade to Python `braintrust` 0.28.0 or TypeScript 3.23.1 or later and rotate any provider keys traced before July 2026"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 61.3
          }
        ],
        "editorialScores": {
          "ergonomics": 66,
          "maintenance": 85,
          "payments": 40,
          "reliability": 61,
          "schema": 85,
          "security": 58,
          "transparency": 50
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl https://api.braintrust.dev/v1/project -H \"Authorization: Bearer $BRAINTRUST_API_KEY\"",
        "claudeCode": "claude mcp add --transport http braintrust https://api.braintrust.dev/mcp",
        "config": {
          "mcpServers": {
            "braintrust": {
              "headers": {
                "Authorization": "Bearer ${BRAINTRUST_API_KEY}"
              },
              "type": "http",
              "url": "https://api.braintrust.dev/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/obs.traces",
        "tool": "https://letme.dev/braintrust"
      },
      "area": "developer",
      "unitPrices": [
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 249,
          "note": "5 GB processed data, 50,000 scores, 30-day retention"
        },
        {
          "item": "Processed data on Starter",
          "unit": "gb",
          "usd": 4
        },
        {
          "item": "Processed data on Pro",
          "unit": "gb",
          "usd": 3
        },
        {
          "item": "Extended retention on Pro",
          "unit": "gb",
          "usd": 0.5,
          "note": "per GB a month beyond 30 days"
        }
      ],
      "provenance": {
        "legalEntity": "Braintrust Data, Inc.",
        "domain": "braintrust.dev",
        "domainRegistered": "2021-03-25",
        "endpointOnVendorDomain": true,
        "terms": "https://www.braintrust.dev/legal/terms-of-service",
        "privacy": "https://www.braintrust.dev/legal/privacy-policy",
        "statusPage": "https://status.braintrust.dev",
        "changelog": "https://www.braintrust.dev/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/braintrust.json",
      "live": {
        "slug": "braintrust",
        "probe": {
          "target": "https://api.braintrust.dev/v1",
          "method": "get",
          "lastAt": "2026-10-04T23:32:44.578763193Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 141,
          "authRequired": false,
          "uptime24h": 99.63,
          "uptime30d": 99.82,
          "p50ms24h": 108,
          "p95ms24h": 186,
          "samples24h": 272,
          "samples30d": 1097,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 34
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 266
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.braintrust.dev",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:27:40.891253514Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "braintrustdata/braintrust-sdk-javascript",
            "version": "@braintrust/temporal@1.0.1",
            "released": "2026-10-01",
            "seenAt": "2026-10-04T16:22:40.159832334Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.braintrustdata/braintrust",
            "version": "1.0.0",
            "seenAt": "2026-10-03T23:29:28.630222764Z"
          },
          {
            "registry": "npm",
            "name": "braintrust",
            "version": "3.36.0",
            "seenAt": "2026-10-04T16:22:39.707776024Z"
          },
          {
            "registry": "pypi",
            "name": "braintrust",
            "version": "0.44.0",
            "released": "2026-10-01",
            "seenAt": "2026-10-04T16:22:39.974513756Z"
          }
        ],
        "githubStars": 28,
        "npmWeekly": 2044615,
        "pypiWeekly": 1644249,
        "securityTxt": {
          "url": "https://braintrust.dev/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:41.228122743Z"
        },
        "llmsTxt": {
          "url": "https://www.braintrust.dev/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:21.471688058Z"
        },
        "domain": {
          "domain": "braintrust.dev",
          "registered": "2021-03-25",
          "source": "https://pubapi.registry.google/rdap/domain/braintrust.dev",
          "checkedAt": "2026-10-04T13:08:21.062714804Z"
        },
        "pages": [
          {
            "url": "https://www.braintrust.dev/docs/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:33.413638455Z",
            "changedAt": "2026-10-03T15:37:29.257129491Z",
            "fingerprint": "92cfa827a3cc"
          },
          {
            "url": "https://www.braintrust.dev/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:39.826623842Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "aeaf56390ac0"
          },
          {
            "url": "https://www.braintrust.dev/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:35.778324091Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "834b4aa10e1f"
          },
          {
            "url": "https://www.braintrust.dev/legal/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:37.707572087Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "2f9eb5dc8e8d"
          }
        ],
        "updatedAt": "2026-10-04T23:32:44.578763193Z"
      }
    },
    "b": {
      "slug": "galileo",
      "name": "Galileo API + MCP",
      "vendor": "Galileo (now Splunk Agent Observability, Cisco)",
      "vendorUrl": "https://galileo.ai",
      "kind": "http-api",
      "category": "agent-observability",
      "summary": "Hosted tracing, evaluation metrics and guardrails for LLM apps and agents, with a REST API, Python and TypeScript SDKs and an 8-tool MCP server in preview.",
      "url": "https://www.anchorterminal.com/tools/galileo",
      "markdownUrl": "https://www.anchorterminal.com/tools/galileo.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/galileo.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/galileo.json",
      "repo": "https://github.com/rungalileo/galileo-python",
      "license": "Apache-2.0 (SDKs only, platform closed source)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.galileo.ai/v2",
      "packages": [
        {
          "registry": "pypi",
          "name": "galileo"
        },
        {
          "registry": "npm",
          "name": "galileo"
        }
      ],
      "auth": "api-key",
      "authNotes": "API key in a header. The current OpenAPI spec names it `Splunk-AO-API-Key` and older Galileo docs `Galileo-API-Key`. The API also issues a JWT from `/login/api_key` that expires after 24 hours and accepts HTTP Basic with a username and password. The MCP server takes the same API key header. New SaaS accounts on Splunk Observability Cloud use `https://app.{realm}.observability.splunkcloud.com/ao/api/` and Splunk's own authentication. Self-hosted deployments use their own api.* host.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 5,000 traces a month, unlimited users and unlimited custom evals. Pro $100 a month billed yearly with 50,000 traces, then priced by trace volume with no published rate. Enterprise is custom with unlimited traces, custom rate limits and hosted, VPC or on-prem deployment. The pricing page doesn't mention Splunk, but the docs say customers onboarded after 2026-08-07 should use the Splunk docs (https://galileo.ai/pricing).",
      "priceSummary": "$100 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 8,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 1431,
        "pypiWeekly": 6160,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.galileo.ai",
      "llmsTxt": "https://docs.galileo.ai/llms.txt",
      "openapi": "https://api.galileo.ai/public/v2/openapi.json",
      "capabilities": [
        "obs.traces",
        "obs.evals",
        "obs.prompts",
        "obs.datasets"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "python",
        "typescript",
        "closed-source",
        "enterprise"
      ],
      "lastRelease": "2026-10-01",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 48,
        "grade": "D",
        "agentReady": false,
        "rank": 378,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 8,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 73,
          "maintenance": 74,
          "payments": 20,
          "reliability": 18,
          "schema": 79,
          "security": 33,
          "transparency": 56
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "OpenAPI 3.1 spec with 184 paths and 244 operations. No status page, no published rate limits and no SLA.",
        "strengths": [
          "OpenAPI 3.1 spec with 184 paths and 244 operations",
          "Error catalogue of 111 entries with HTTP status, fix and a retriable flag",
          "Free plan with 5,000 traces a month and unlimited users",
          "TypeScript SDK released three times in September 2026, most recently 2.3.2 on 1 October",
          "Enterprise deployment in your VPC or on-prem"
        ],
        "weaknesses": [
          "No status page, no published rate limits and no SLA",
          "Split between Galileo and Splunk since 7 August 2026, with two doc sites, two API hosts and no timeline for the old ones",
          "MCP server in preview with 8 tools, only `Get Signals` reads production data",
          "No security page, trust portal, security.txt or certification claim found, and the privacy policy dates from November 2024",
          "Python SDK quiet since 30 July and its CHANGELOG.md stuck at v0.10.0"
        ],
        "agentNotes": [
          "Check which side the account lives on first. Pre-August Galileo accounts use api.galileo.ai, Splunk SaaS accounts use app.{realm}.observability.splunkcloud.com/ao/api/",
          "Send the key as `Splunk-AO-API-Key`. The current spec no longer lists `Galileo-API-Key`",
          "Page list endpoints with `limit` and `starting_token`",
          "Use the error catalogue's retriable flag to decide whether to retry. 429s carry no documented `Retry-After`",
          "Use the REST API to read traces. The MCP server mostly creates datasets and prompts"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 48
          }
        ],
        "editorialScores": {
          "ergonomics": 73,
          "maintenance": 74,
          "payments": 20,
          "reliability": 18,
          "schema": 79,
          "security": 33,
          "transparency": 36
        },
        "provenanceScore": 76
      },
      "connect": {
        "http": "curl https://api.galileo.ai/v2/current_user -H \"Galileo-API-Key: $GALILEO_API_KEY\"",
        "claudeCode": "claude mcp add --transport http --header \"Galileo-API-Key: $GALILEO_API_KEY\" galileo https://api.galileo.ai/mcp/http/mcp",
        "config": {
          "mcpServers": {
            "galileo": {
              "headers": {
                "Accept": "text/event-stream",
                "Galileo-API-Key": "${GALILEO_API_KEY}"
              },
              "type": "http",
              "url": "https://api.galileo.ai/mcp/http/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/obs.traces",
        "tool": "https://letme.dev/galileo"
      },
      "alsoIn": [
        "guardrails"
      ],
      "area": "developer",
      "unitPrices": [
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 100,
          "note": "billed yearly, 50,000 traces a month"
        }
      ],
      "provenance": {
        "legalEntity": "Galileo Technologies, Inc.",
        "domain": "galileo.ai",
        "domainRegistered": "2020-05-05",
        "endpointOnVendorDomain": true,
        "terms": "https://galileo.ai/terms-of-service",
        "privacy": "https://galileo.ai/privacy-policy",
        "statusPage": "",
        "changelog": "https://docs.galileo.ai/release-notes",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Now owned by Cisco and sold as Splunk Agent Observability; the terms still name Galileo Technologies, Inc."
        ],
        "score": 76
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/galileo.json",
      "live": {
        "slug": "galileo",
        "probe": {
          "target": "https://api.galileo.ai/v2",
          "method": "get",
          "lastAt": "2026-10-04T23:32:47.716945549Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 2443,
          "authRequired": false,
          "uptime24h": 99.26,
          "uptime30d": 99.73,
          "p50ms24h": 262,
          "p95ms24h": 3880,
          "samples24h": 272,
          "samples30d": 1097,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 247
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 265
            }
          ]
        },
        "versions": [
          {
            "registry": "github",
            "name": "rungalileo/galileo-python",
            "version": "v2.6.0",
            "released": "2026-07-30",
            "seenAt": "2026-10-04T16:27:40.611176298Z"
          },
          {
            "registry": "npm",
            "name": "galileo",
            "version": "2.3.2",
            "seenAt": "2026-10-04T16:27:40.188712083Z"
          },
          {
            "registry": "pypi",
            "name": "galileo",
            "version": "2.6.0",
            "released": "2026-07-30",
            "seenAt": "2026-10-04T16:27:40.002157835Z"
          }
        ],
        "githubStars": 22,
        "npmWeekly": 1892,
        "securityTxt": {
          "url": "https://galileo.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:43.807289994Z"
        },
        "llmsTxt": {
          "url": "https://docs.galileo.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:48.251773467Z"
        },
        "domain": {
          "domain": "galileo.ai",
          "registered": "2020-05-05",
          "source": "https://rdap.identitydigital.services/rdap/domain/galileo.ai",
          "checkedAt": "2026-10-04T13:06:13.135112782Z"
        },
        "pages": [
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  "markdown": "Braintrust API + MCP has a score of 61.3 (C) against Galileo API + MCP's 48 (D). Both do obs traces. The largest gap is reliability, 43 points.\n\n- Braintrust API + MCP: grade C, 61.3/100, rank #229 of 452. Markdown https://www.anchorterminal.com/tools/braintrust.md · JSON https://www.anchorterminal.com/api/v1/tools/braintrust.json\n- Galileo API + MCP: grade D, 48/100, rank #378 of 452. Markdown https://www.anchorterminal.com/tools/galileo.md · JSON https://www.anchorterminal.com/api/v1/tools/galileo.json\n\n## Which one, for what\n\nPick Braintrust API + MCP for reliability (+43), schema \u0026 documentation (+6), security \u0026 auth (+25), payments \u0026 pricing (+20), maintenance \u0026 community (+11), transparency \u0026 trust (+12).\n\nPick Galileo API + MCP for agent ergonomics (+7).\n\n## Score by category\n\n| Category | Weight | Braintrust API + MCP | Galileo API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 61 | 18 | Braintrust API + MCP +43 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 79 | Braintrust API + MCP +6 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 73 | Galileo API + MCP +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 58 | 33 | Braintrust API + MCP +25 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 20 | Braintrust API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 74 | Braintrust API + MCP +11 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 68 | 56 | Braintrust API + MCP +12 |\n| Negative events | ≤15 | -4 | 0 | |\n| **Total** | | **61.3 · C** | **48 · D** | |\n\n## Facts side by side\n\n| Fact | Braintrust API + MCP | Galileo API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Braintrust | Galileo (now Splunk Agent Observability, Cisco) |\n| Hosted endpoint | `https://api.braintrust.dev/v1` | `https://api.galileo.ai/v2` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (SDKs only, platform closed source) | Apache-2.0 (SDKs only, platform closed source) |\n| Tools exposed | 42 | 8 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.braintrustdata/braintrust` | not listed |\n| Last release | 2026-10-01 | 2026-10-01 |\n| Popularity | 2M npm/wk, 1.7M PyPI/wk | 1.4k npm/wk, 6.2k PyPI/wk |\n| Agent reviews | 3/5 (2) | 2.5/5 (2) |\n\n## Verdicts\n\n**Braintrust API + MCP.** OpenAPI 3.0.3 spec with 75 paths, 429 and `Retry-After` declared on 154 operations. Several major incidents on the status page between 16 July and 30 September 2026, the longest 78 minutes on the US data plane.\n\n**Galileo API + MCP.** OpenAPI 3.1 spec with 184 paths and 244 operations. No status page, no published rate limits and no SLA.\n\n## Before you call either\n\n### Braintrust API + MCP\n\n1. Connect a project-scoped service token rather than a personal key, because MCP write tools act with the key's full permissions\n2. Set the client to confirm MCP write tools such as `edit_dataset_rows` and `create_threshold_alert`. The server has no read-only mode\n3. Cache `sql_query` results. Starter and Pro allow about 20 queries a minute and return 429\n4. Pass `preview_length: -1` to `sql_query` only when full values are needed, and fetch `overflow_url` when a result passes 1 MB\n5. Upgrade to Python `braintrust` 0.28.0 or TypeScript 3.23.1 or later and rotate any provider keys traced before July 2026\n\n### Galileo API + MCP\n\n1. Check which side the account lives on first. Pre-August Galileo accounts use api.galileo.ai, Splunk SaaS accounts use app.{realm}.observability.splunkcloud.com/ao/api/\n2. Send the key as `Splunk-AO-API-Key`. The current spec no longer lists `Galileo-API-Key`\n3. Page list endpoints with `limit` and `starting_token`\n4. Use the error catalogue's retriable flag to decide whether to retry. 429s carry no documented `Retry-After`\n5. Use the REST API to read traces. The MCP server mostly creates datasets and prompts\n\n## Other comparisons with Braintrust API + MCP or Galileo API + MCP\n\n- [Arize Phoenix vs Braintrust API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-braintrust.md)\n- [Arize Phoenix vs Galileo API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-galileo.md)\n- [Baserun vs Braintrust API + MCP](https://www.anchorterminal.com/compare/baserun-vs-braintrust.md)\n- [Baserun vs Galileo API + MCP](https://www.anchorterminal.com/compare/baserun-vs-galileo.md)\n- [Braintrust API + MCP vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/braintrust-vs-helicone.md)\n- [Braintrust API + MCP vs HoneyHive](https://www.anchorterminal.com/compare/braintrust-vs-honeyhive.md)\n- [Braintrust API + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-laminar.md)\n- [Braintrust API + MCP vs Langfuse API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-langfuse.md)\n- [Braintrust API + MCP vs LangSmith API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-langsmith.md)\n- [Braintrust API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-respan.md)\n- [Galileo API + MCP vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/galileo-vs-helicone.md)\n- [Galileo API + MCP vs HoneyHive](https://www.anchorterminal.com/compare/galileo-vs-honeyhive.md)\n- [Galileo API + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/galileo-vs-laminar.md)\n- [Galileo API + MCP vs Langfuse API + MCP](https://www.anchorterminal.com/compare/galileo-vs-langfuse.md)\n- [Galileo API + MCP vs LangSmith API + MCP](https://www.anchorterminal.com/compare/galileo-vs-langsmith.md)\n- [Galileo API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/galileo-vs-respan.md)\n",
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    "description": "Braintrust API + MCP has a score of 61.3 (C) against Galileo API + MCP's 48 (D). Both do obs traces. The largest gap is reliability, 43 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Braintrust API + MCP vs Galileo API + MCP for AI agents",
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