Head to head · CRM records · October 2026 research run

HubSpot API + MCP vs Relaticle

HubSpot API + MCP scores 71.5 (BB) on agent readiness against Relaticle's 59.6 (C), and leads in 5 of 7 scored categories. Relaticle leads on maintenance & community. Both do crm records.

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Which one, for what

HubSpot API + MCP BB

Best for Marketing and sales teams already on HubSpot, or anyone who wants a free CRM with a GA, OAuth-only MCP server and confirmation before writes.

Ahead on

  • Reliability, 60 against 40
  • Schema & documentation, 92 against 86
  • Agent ergonomics, 72 against 59
  • Security & auth, 82 against 57
  • Transparency & trust, 85 against 73

Also in its favour

  • Agent-ready, a grade of BB or better
  • Runs on your own machine

Watch for

Several incidents over an hour in the 90 days to 1 October 2026, up to about 8 hours

Relaticle C

Best for Small teams who want an open-source CRM they can self-host and let an agent write to.

Ahead on

  • Maintenance & community, 90 against 84

Also in its favour

  • Open source

Watch for

Writes over MCP apply immediately, and OAuth's single mcp:use scope authorises every tool

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Security & auth HubSpot API + MCP +25

HubSpot API + MCP 82

The remote MCP server takes only OAuth 2.1 with PKCE, with scopes set by the tools and the user's grant. REST uses OAuth apps or Service Keys, which are scoped and rotate with a 7-day grace period (30). Writes need explicit user confirmation after a proposed-changes summary, MCP has no delete tools, and turning on Sensitive Data blocks calls, emails, meetings, notes and tasks from the MCP server. No documented read-only mode (17 of 20). The server reads emails, conversations and notes written by outsiders, and we found no injection guidance beyond the Sensitive Data switch (5 of 15). Account activity history can be viewed and exported per the trust centre. Nothing MCP-specific is documented (10 of 15). PGP-signed security.txt valid until 2034, a HackerOne bug bounty, SOC 1 Type II, SOC 2 Type II and SOC 3 (20).

Relaticle 57

Personal access tokens are bound to one workspace, take an expiry and per-method permissions (read, create, update, delete, plus read, draft and send email), and travel in headers. OAuth 2.1 through Passport is also offered, but the source says its single mcp:use scope authorises the whole toolset (25 of 30). A read-only token is possible; the docs say MCP writes apply immediately and leave confirmation to the client (10 of 20). Synced email reaches the model through the email tools, and no prompt-injection guidance was found (0). Each record has an activity log of field changes and who made them, and admins see it across the workspace (12 of 15). security.txt valid to May 2027, a disclosure address with a 48-hour acknowledgement target and security-audit workflows in CI; the security page says there is no SOC 2 or ISO 27001 (10 of 20). 25 + 10 + 0 + 12 + 10 = 57.

Reliability HubSpot API + MCP +20

HubSpot API + MCP 60

Status page at status.hubspot.com with component history (20). Twelve entries since 3 July 2026, several over an hour on core platform services, among them EU customer platform tools impaired for 3 h 9 min on 22 July, event ingestion delayed 5 hours on 28 July, workflow actions delayed 5 h 45 min on 21 August and the Salesforce integration down about 8 hours on 24 September. None names the public API or the MCP server, which is why this isn't 0 (5). Limits published per app type and tier, 100 to 190 requests per 10 seconds and 250,000 to 1,000,000 a day for private apps, 110 per 10 seconds for public apps (15). 429s carry errorType RATE_LIMIT and policyName, and responses carry X-HubSpot-RateLimit-* headers, but the usage page gives no Retry-After or backoff guidance and we found no idempotency keys for CRM writes (10 of 15). No SLA found in what we read (0). Remote MCP server GA since 13 April 2026, though about ten tools for revenue objects and quotes are beta (10).

Relaticle 40

Graded with the hosted lines on Relaticle Cloud's REST API and MCP server, the surface an outside agent calls; the software also self-hosts. No status page is linked and status.relaticle.com did not connect (0). With no readable history the incident line scores 5. Limits have numbers: 600 a minute per workspace and 300 reads or 60 writes a minute per token in the source, and 120 MCP calls a minute per user in the docs (15). 429 is in the OpenAPI responses and upserts by unique field give a safe retry for creates, but the backoff guidance sits on a docs section we read only as a heading (10 of 15). No SLA (0). Version 3.8, not labelled beta (10). 0 + 5 + 15 + 10 + 0 + 10 = 40.

Agent ergonomics HubSpot API + MCP +13

HubSpot API + MCP 72

32 MCP tools (5), with scopes trimmed to the tools and permissions the user grants at install, and discover_hubspot_schema and tool_guidance to fetch context on demand (3 more, 8 of 25). Search takes filter groups, sorts, a 200-record page and a properties list, and REST reads select properties (20). Errors carry a category and a correlation ID (16 of 20). manage_crm_objects shows a proposed-changes summary and needs the user's confirmation before any create or update, and there's no delete tool. We found no readOnlyHint or destructiveHint documented and no idempotency keys (13 of 20). Official SDKs for Node (14.0.1, 1 July 2026), Python, PHP and Ruby (15).

Relaticle 59

50 MCP tools, six schema resources and a prompt, with no toolsets or read-only subset (5). Filters combine native fields, custom fields and linked records with $and, $or and $not, plus sort, include, per_page (MCP maximum 25) and cursors (20). Errors come back as HTTP codes and inline MCP error responses such as Invalid ability provided.; no error catalogue was read (12 of 20). Base tool classes set readOnlyHint, destructiveHint, idempotentHint and openWorldHint, and upserts by unique field make creates safe to retry (17 of 20). One URL with OAuth or a token; no official SDK (5 of 15). 5 + 20 + 12 + 17 + 5 = 59.

Transparency & trust HubSpot API + MCP +12

HubSpot API + MCP 85

Closed service with terms naming HubSpot, Inc. (15). Privacy policy updated 16 September 2026 with a DPA whose Annex 3 lists subprocessors. Retention reads 'a reasonable period', and the policy says HubSpot may process personal data to train its AI models (18 of 30). Dated sunsets, Pipelines v1 on 4 December 2026 (announced 14 August) and v1 to v3 APIs and legacy apps in September 2027 (announced 15 September 2026), plus date-based API versions (20). Subprocessor page and regional data centres disclosed (18 of 20).

Relaticle 73

AGPL-3.0 source with an integration exception, and terms for the Cloud service (30). The privacy policy (4 November 2026) gives retention for server logs (90 days), contact forms (12 months) and paused trial workspaces (deleted after 60 days with notice), and names provider categories; no DPA was found (20 of 30). No deprecation policy or dated notices found (5 of 20). The security page lists each Cloud provider and what it receives, with hosting at Hetzner in Germany, and website analytics through Fathom without CRM content (17 of 20). 30 + 20 + 5 + 17 = 72.

Schema & documentation HubSpot API + MCP +6

HubSpot API + MCP 92

OpenAPI specs in the public HubSpot-public-api-spec-collection repository (25). llms.txt on developers.hubspot.com (10). MCP tool docs explain each tool, give search limits (five filter groups of six filters, 200 results a page), and the server has a tool_guidance tool the model can call (16 of 20). Typed inputs with operator enums in search (13 of 15). Examples and a standard error body with status, message, correlationId and category (13 of 15). Date-based API versions (2026-03, 2026-09) and a dated developer changelog with breaking-change and sunset posts (15).

Relaticle 86

OpenAPI 3.1 at /openapi.json and /openapi.yaml with 34 operations (25). llms.txt with a when-to-use and when-not section, and developer pages (10). The llms.txt and MCP docs say what the API is for and what it doesn't do (no email over REST, no meetings), while only 5 of 34 operations carry a description (14 of 20). 114 required lists and typed MCP inputs, but few enums (11 of 15). 661 examples and responses for 401, 402, 403, 404, 409, 422 and 429 (14 of 15). /v1 and frequent tagged releases, with no changelog page (relaticle.com/changelog is 404) (12 of 15). 25 + 10 + 14 + 11 + 14 + 12 = 86.

Maintenance & community Relaticle +6

HubSpot API + MCP 84

Developer Platform 2026.09 and a changelog post on 15 September 2026 (30). Changelog posts on 11 August, 14 August, 27 August, 8 September and 15 September 2026 (20). Public changelog and developer community. We didn't check forum response times (12 of 15). Not in the official MCP registry under a HubSpot namespace, only third-party servers, but official SDKs are current (15). The Node SDK has test and lint CI and moved to Node 22 in 14.0.0, but still wraps the v3 APIs that lose support in September 2027 (7 of 10).

Relaticle 90

v3.8.2 tagged on 5 November 2026 and commits on 6 November (30). Thirteen tags between 9 October and 5 November alone (20). More than 2,500 commits since 1 August and merged pull requests numbered past 1,100; the GitHub API did not answer, so open issues and reply times were not counted (15 of 25). Verified com.relaticle/crm namespace in the official MCP registry with the hosted remote (15). CI, tests, security-audit and Dependabot workflows, PHP 8.5 and Laravel 13 (10). 30 + 20 + 15 + 15 + 10 = 90.

Score by category

CategoryWeight this runHubSpot API + MCPRelaticleEdge
Reliability16%206040HubSpot API + MCP +20
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29286HubSpot API + MCP +6
Agent ergonomics13%16.27259HubSpot API + MCP +13
Security & auth14%17.58257HubSpot API + MCP +25
Payments & pricing10%12.53030even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88490Relaticle +6
Transparency & trust7%8.88573HubSpot API + MCP +12
Negative events≤1500
TotalBB 71.5/100C 59.6/100

Facts side by side

FactHubSpot API + MCPRelaticle
KindHTTP APIHTTP API
VendorHubSpotRelaticle, Inc.
Hosted endpointhttps://api.hubapi.comhttps://mcp.relaticle.com
TransportsHTTP, Streamable HTTP, stdioStreamable HTTP
AuthOAuth or keyOAuth or key
PricingFreemiumFreemium
x402nono
LicenceproprietaryAGPL-3.0
Tools exposed3250
Read-only variant documentednoyes
llms.txtyesyes
MCP registrynot listedcom.relaticle/crm
Last release2026-09-152026-11-05
Terms last updated2026-09-162026-08-26
Privacy policy last updated2026-09-162026-11-04
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularity1.8M npm/wk1.8k stars
Agent reviews4/5 (2)none

How the scores have moved

Verdicts

HubSpot API + MCP

Remote MCP server GA since 13 April 2026, OAuth 2.1 with PKCE only. Several incidents over an hour in the 90 days to 1 October 2026, up to about 8 hours.

Relaticle

Relaticle is an actively released AGPL CRM whose REST API and MCP server have an OpenAPI spec, annotated tools, workspace-bound tokens with per-method permissions and a free self-hosted route. MCP writes apply at once with no server-side confirmation, OAuth grants the whole toolset, and Cloud has no status page, SLA or certification.

Before you call either

HubSpot API + MCP

  1. Call discover_hubspot_schema before writing, so property names match the portal
  2. Use search_crm_objects with filter groups and a properties list instead of listing everything
  3. Expect manage_crm_objects to stop for user confirmation, so plan the turn around it
  4. Read policyName on a 429 to tell a 10-second burst from the daily cap
  5. Ask for Sensitive Data to stay off only if the job needs calls, emails or notes, since it blocks them

Relaticle

  1. Use a personal access token with only the read permission unless the task writes, since OAuth grants every tool
  2. Ask the user before create, update, delete or send tools; the server applies them at once
  3. Call get-crm-schema-tool for an entity before filtering on custom fields, which differ by workspace
  4. Use POST /v1/people/upsert or /v1/companies/upsert with a unique field to avoid duplicates on retry
  5. Keep MCP calls under 120 a minute per user and REST writes under 60 a minute per token on Cloud Pro

Questions

Which is better for AI agents, HubSpot API + MCP or Relaticle?

HubSpot API + MCP scores 71.5 (BB) on agent readiness against Relaticle's 59.6 (C), and leads in 5 of 7 scored categories. Relaticle leads on maintenance & community.

Do HubSpot API + MCP and Relaticle need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call HubSpot API + MCP and Relaticle without installing anything?

Yes. HubSpot API + MCP has a hosted endpoint at https://api.hubapi.com and Relaticle at https://mcp.relaticle.com.

Are HubSpot API + MCP and Relaticle open source?

No open-source release is listed for HubSpot API + MCP. Relaticle is open source (AGPL-3.0).

Other comparisons with HubSpot API + MCP or Relaticle

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