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Head to head · Crm records · October 2026 research run

Affinity vs Salesflare

Affinity scores 63.4 (B) on agent readiness against Salesflare's 48.5 (D), and leads in 6 of 7 scored categories. Salesflare leads on payments & pricing. Both do crm records.

AffinityProject Affinity, Inc. · HTTP API B63.4/100#359 of 841 SalesflareSalesflare BVBA · HTTP API D48.5/100#720 of 841

Which one, for what

Affinity B

Good for Venture capital, private equity and other private capital firms that already run Affinity and want an agent to read relationship strength, pipeline lists, notes and meetings, then update fields and log notes.

Ahead on

  • Schema & documentation, 91 against 57
  • Agent ergonomics, 66 against 49
  • Security & auth, 66 against 44
  • Maintenance & community, 70 against 25
  • Transparency & trust, 70 against 58

Also in its favour

  • Runs on your own machine

Watch for

No self-serve access. Every plan button reads Contact sales, the Essential plan has no API, and trial accounts can't call the API

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.

Ahead on

  • Payments & pricing, 30 against 10

Also in its favour

  • Free to start without a card

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

CategoryWeight this runAffinitySalesflareEdge
Reliability16%206463Affinity +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29157Affinity +34
Agent ergonomics13%16.26649Affinity +17
Security & auth14%17.56644Affinity +22
Payments & pricing10%12.51030Salesflare +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87025Affinity +45
Transparency & trust7%8.87058Affinity +12
Negative events≤1500
Total63.4 · B48.5 · D

Facts side by side

FactAffinitySalesflare
KindHTTP APIHTTP API
VendorProject Affinity, Inc.Salesflare BVBA
Hosted endpointhttps://api.affinity.co/v2https://api.salesflare.com
TransportsHTTP, Streamable HTTP, stdioHTTP
AuthOAuth or keyOAuth or key
PricingPaidPaid
x402nono
LicenceProprietary service under Affinity's master subscription agreement. The affinity-mcp package on PyPI is MITProprietary service under Salesflare's Terms of Service
Tools exposed75none
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-10-022026-10-08
Terms last updatedno date given
Privacy policy last updated2026-07-01couldn't be read
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularity268 PyPI/wknone

Verdicts

Affinity

A public OpenAPI 3.1 file, dated API versions with migration notes and a hosted MCP server with a read-only OAuth scope give an agent a well-documented way in. Access needs a Scale plan at $2,300 a user a year, sold through sales, with no trial that includes the API, and 36 of the 112 v2 operations are marked beta.

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

Affinity

  1. Send X-Affinity-Api-Version: 2026-09-17 on every request, or the key's default version applies. Unauthenticated calls answered as 2024-01-01 when we checked
  2. Read x-ratelimit-limit-user-remaining and x-ratelimit-limit-org-remaining on each response. The limits are 900 calls a minute per user and, below Enterprise, 100,000 a month per account, shared by v1, v2 and MCP
  3. Follow pagination.nextUrl for the next page, and pass fieldIds or fieldTypes so list calls return only the fields needed
  4. Check for duplicates before a create. There are no idempotency keys, so a retried POST can make a second record
  5. For MCP, untick the write scope at OAuth consent when the task only reads. Treat note, transcript and file text as untrusted input

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, Affinity or Salesflare?

Affinity scores 63.4 (B) on agent readiness against Salesflare's 48.5 (D), and leads in 6 of 7 scored categories. Salesflare leads on payments & pricing.

Do Affinity and Salesflare need an API key?

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

Can an agent call Affinity and Salesflare without installing anything?

Yes. Affinity has a hosted endpoint at https://api.affinity.co/v2 and Salesflare at https://api.salesflare.com.

Other comparisons with Affinity or Salesflare

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