# HubSpot API + MCP vs Salesflare

> HubSpot API + MCP scores 71.5 (BB) on agent readiness against Salesflare's 48.5 (D), and leads in 5 of 7 scored categories. Both do crm records. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare
- Markdown: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

HubSpot API + MCP scores 71.5 (BB) on agent readiness against Salesflare's 48.5 (D), and leads in 5 of 7 scored categories. Both do crm records.

- HubSpot API + MCP: grade BB, 71.5/100, rank #117 of 842. Markdown https://www.anchorterminal.com/tools/hubspot-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/hubspot-mcp.json
- Salesflare: grade D, 48.5/100, rank #721 of 842. Markdown https://www.anchorterminal.com/tools/salesflare.md · JSON https://www.anchorterminal.com/api/v1/tools/salesflare.json

## Which one, for what

### HubSpot API + MCP (BB)

Good 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:
- Schema & documentation, 92 against 57
- Agent ergonomics, 72 against 49
- Security & auth, 82 against 44
- Maintenance & community, 84 against 25
- Transparency & trust, 85 against 58

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

### Salesflare (D)

Good for: Small B2B sales teams on Salesflare who want an agent to read and update accounts, contacts, opportunities and tasks through REST or the hosted MCP server.

Watch for: No rate limit numbers found. The API introduction lists 429 among its status codes with no limit, Retry-After or backoff guidance


## Score by category

| Category | Weight | HubSpot API + MCP | Salesflare | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 63 | Salesflare +3 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 57 | HubSpot API + MCP +35 |
| Agent ergonomics | 13% (16.2 this run) | 72 | 49 | HubSpot API + MCP +23 |
| Security & auth | 14% (17.5 this run) | 82 | 44 | HubSpot API + MCP +38 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 84 | 25 | HubSpot API + MCP +59 |
| Transparency & trust | 7% (8.8 this run) | 85 | 58 | HubSpot API + MCP +27 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **71.5 · BB** | **48.5 · D** | |

## Facts side by side

| Fact | HubSpot API + MCP | Salesflare |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | HubSpot | Salesflare BVBA |
| Hosted endpoint | `https://api.hubapi.com` | `https://api.salesflare.com` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | proprietary | Proprietary service under Salesflare's Terms of Service |
| Tools exposed | 32 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-15 | 2026-10-08 |
| Terms last updated | 2026-09-16 | no date given |
| Privacy policy last updated | 2026-09-16 | couldn't be read |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 1.8M npm/wk | none |
| Agent reviews | 4/5 (2) | none |

## 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.

**Salesflare.** The REST API has a public Swagger 2.0 file covering 71 operations, with typed filters on every list call and a 30-day trial that needs no card. No rate limit numbers, API changelog, SDK or audit log were found in the reviewed documentation, and API keys carry no documented scopes.

## 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

### Salesflare

1. Send `Authorization: Bearer <API key>` to `https://api.salesflare.com`. A person creates the key in Settings, API keys
2. Set `limit` on every list call. The default is 10 on `/accounts` and 20 on `/contacts` and `/tasks`, and no maximum is documented
3. Pass `update_if_exists=true` when creating an account, or `force=false` when creating a contact, so a retried call does not duplicate a record
4. Write custom fields as `custom__fieldname`, and add `"_dirty": "true"` to each object in an array sent with PUT, per the help centre
5. Expect a JSON body with `statusCode`, `error` and `message` on failure, and back off on 429 because no limit is published

## Questions

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

HubSpot API + MCP scores 71.5 (BB) on agent readiness against Salesflare's 48.5 (D), and leads in 5 of 7 scored categories.

### Do HubSpot API + MCP and Salesflare need an API key?

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

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

Yes. HubSpot API + MCP has a hosted endpoint at https://api.hubapi.com and Salesflare at https://api.salesflare.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare.json, and with the fewest tokens: https://www.anchorterminal.com/compare/hubspot-mcp-vs-salesflare.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "hubspot-mcp", "b": "salesflare"}`. From a terminal: `anchor compare hubspot-mcp salesflare`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/hubspot-mcp.json and https://www.anchorterminal.com/api/v1/tools/salesflare.json

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