--- title: "OpenFunnel API: pricing, rate limits & MCP | ONEGTMLAB" description: "OpenFunnel API: YC-backed, agent-first GTM intelligence API. Credit-metered Agent Primitives (lookalikes, tech-stack-from-job-posts, deep research) plus…" canonical: https://www.onegtmlab.dev/tool-directory/signals/openfunnel --- # OpenFunnel API: pricing, rate limits & MCP | ONEGTMLAB [](/) [ Book a call ](/book) ![](/_astro/openfunnel.CTHR_rPr.svg) API review # OpenFunnel API review YC-backed, agent-first GTM intelligence API. Credit-metered Agent Primitives (lookalikes, tech-stack-from-job-posts, deep research) plus a platform API that deploys long-running hiring, tech, job-change and LinkedIn signal agents. Hosted OAuth MCP. Best for finding lookalike companies from 1-10 seed domains or a plain-English description, up to 100 sync / 10,000 async. Verified 25 Oct 2026 · 15 endpoints listed · Official MCP server [ See pricing ](#pricing)[ OpenFunnel API docs ](https://docs.openfunnel.dev/api-reference/openapi.json) At a glance Category Signals, Sourcing, Research, Enrichment Pricing model Credits Free tier DIY: free, 50,000 credits to start, no credit card Auth API key Official MCP Yes Best for Finding lookalike companies from 1-10 seed domains or a plain-English description, up to 100 sync / 10,000… [openfunnel.dev ↗](https://openfunnel.dev)[Pricing page ↗](https://openfunnel.dev/pricing) ## What a call costs The actions you pay for, as OpenFunnel prices them in credits. Action Cost Per Search Lookalikes (sync or bulk) 1 credit per company returned Search Companies by Tech Stack 0.5 (credits page) vs 5 / 10 (API response schema) credits per company; conflict unresolved, read credits\_consumed Deep Research per-workspace configured price per successful call Lookup, options, balance, bulk poll/cancel 0 free Empty result set 0 free Deep Research that finds nothing / unresolved domain (404) 0 free ## Pricing, plan by plan US dollars, as OpenFunnel's pricing page shows them on 25 Oct 2026. Monthly and annual billing are shown apart. Free tier DIY: free, 50,000 credits to start, no credit card; all agent primitives, deploy your own signal agents, work-email and phone enrichment ### DIY $0 Free 50,000 credits to start (one-time grant as worded) API included ### Enterprise / Custom Custom quote credit pools + dedicated Forward Deployed Engineer, custom instance, on-prem, full UI, verified email/phone API included ## Rate limits DIY plan has 'standard rate limits' (numbers not published). More on limitsLess Only sign-up/OTP 429 codes are documented (RATE\_LIMITED with details.retry\_after\_seconds; OTP\_MAX\_ATTEMPTS after 10 tries; codes expire after 24 h). People contact enrichment runs at ~2 s per person because of an upstream 30 requests/minute limit. ## How to get an API key OpenFunnel uses API key. The steps below follow OpenFunnel's own docs. 1. Create a OpenFunnel account. The DIY plan includes API access. 2. Self-serve in two calls: POST /api/v1/agent/sign-up {email} → 6-digit code by email → POST /api/v1/agent/verify {email, otp\_code} returns the key (existing users get their current key back). 3. Send it with every request: header `X-API-Key: of_...` on every call (both OpenAPI specs declare only X-API-Key, required on all 60 platform operations; openfunnel.dev/llms.txt additionally lists `X-User-ID`, which the specs do not). MCP uses OAuth 2.1. 4. Make a first call: Lookalike companies from seed\_domains (1-10) and/or query, firmographic filters. Keep the key in an environment variable, never in the command. ``` curl -X GET "https://api.openfunnel.dev/api/v1/account/search-lookalikes" \ -H "X-API-Key: $OPENFUNNEL_API_KEY" ``` ## Where the docs live What Where Documentation [docs.openfunnel.dev](https://docs.openfunnel.dev) API reference [docs.openfunnel.dev/api-reference/openapi.json](https://docs.openfunnel.dev/api-reference/openapi.json) OpenAPI spec [docs.openfunnel.dev/agent-primitives/openapi.json](https://docs.openfunnel.dev/agent-primitives/openapi.json) llms.txt [docs.openfunnel.dev/llms.txt](https://docs.openfunnel.dev/llms.txt) Base URL `https://api.openfunnel.dev` MCP server `https://agents.openfunnel.dev/mcp` SDKs npm package \`openfunnel\` (named in metadata) ## Strengths and limits ### Where it fits - Finding lookalike companies from 1-10 seed domains or a plain-English description, up to 100 sync / 10,000 async - Finding companies by the technologies named in their job postings (credits page: 0.5 credit per company; response schema: 5-10, unresolved) - Deploying hiring/tech/job-change/social-listening/competitor-engagement signal agents via /api/v2/signal/deploy/\* - Qualifying one known company against your criteria with Deep Research ### Where it falls short - Generic high-volume raw lead list sourcing; vendor says it is optimised for high-context trigger-based GTM ### Worth knowing - Two API surfaces with two specs and two MCP URLs: Agent Primitives (agents.openfunnel.dev/mcp) and the platform V1 Client APIs (mcp.openfunnel.dev/mcp). Pick the right one for the task - search-lookalikes limit defaults to 10 (max 100) and has no offset. Use the bulk endpoint for more, never loop the sync one - A bulk job with null next\_cursor may still be running; check status - locations must be ISO 3166-1 alpha-3 (USA, GBR), never alpha-2 - Credit cost of deploying platform signal agents and enrichment jobs is not published; Deep Research price is per-workspace. Read credits\_consumed on every response 5 moreShow fewer - Product has pivoted since our April 2026 notes: public pricing is now DIY-free + Enterprise only; older (2026-04-15) describes the earlier UI/agent product - Auth header is X-API-Key, not Bearer. openfunnel.dev/llms.txt also asks for X-User-ID, but neither OpenAPI spec defines it - Tech-stack search price conflicts inside OpenFunnel's own docs: 0.5 credit/company on the credits page vs 5 (10 with enrich or any firmographic filter) in the endpoint's response schema. Budget for the higher figure until measured - Self-serve signup was down on 2026-10-25 (HTTP 500 'Failed to send verification email' on API and web signup), so nothing here is live-tested - Signal deploy bodies accept max\_credit\_limit; set it, because deploy credit costs are unpublished ## Who should use it Use OpenFunnel for Finding lookalike companies from 1-10 seed domains or a plain-English description, up to 100 sync / 10,000 async Look elsewhere for Generic high-volume raw lead list sourcing; vendor says it is optimised for high-context trigger-based GTM ## If OpenFunnel is not the answer Other Signals tools in this directory, each with its own review. [ ![](/_astro/clearcue.C9H58fxL.svg) Clearcue Signals Best for pre-templated, AI-filtered high-intent signals such as Asking for Recommendations, Frustration Expression and Agency…. Clearcue API review →](/tool-directory/signals/clearcue-ai)[ ![](/_astro/predictleads.M8zXWdNb.svg) PredictLeads Signals Free planOfficial MCP Best for account signals for trigger outreach. PredictLeads API review →](/tool-directory/signals/predictleads)[ ![](/_astro/theirstack.Cfe10y4N_JLnR5.webp) TheirStack Signals Free planOfficial MCP Best for hiring signals. TheirStack API review →](/tool-directory/signals/theirstack) ## Before you build Four things to settle first, each read off OpenFunnel's own pages. - **Confirm the API is on your plan**The DIY plan includes API access. Free tier: DIY: free, 50,000 credits to start, no credit card. - **Keep the key out of your code**API key. It is sent as: header `X-API-Key: of_...` on every call (both OpenAPI specs declare only X-API-Key, required on all 60 platform operations; openfunnel.dev/llms.txt additionally lists `X-User-ID`, which the specs do not). MCP uses OAuth 2.1.. - **Design around the rate limit**DIY plan has 'standard rate limits' (numbers not published). - **Know the catch before you scale**Two API surfaces with two specs and two MCP URLs: Agent Primitives (agents.openfunnel.dev/mcp) and the platform V1 Client APIs (mcp.openfunnel.dev/mcp). Pick the right one for the task ## Want us to build it for you? Tell us what you want OpenFunnel to do in your stack. We will show you how we would wire it into your data, outbound or CRM, and what we would check first. [ Book a call ](/book)[ See case studies ](/case-studies) Read from [openfunnel.dev/pricing](https://openfunnel.dev/pricing), [docs.openfunnel.dev/api-reference/openapi.json](https://docs.openfunnel.dev/api-reference/openapi.json) and [docs.openfunnel.dev/agent-primitives/authentication](https://docs.openfunnel.dev/agent-primitives/authentication). Verified 25 Oct 2026. All 15 endpointsFor developers: method, path, what it does and what it costs. **Base URL:** `https://api.openfunnel.dev` **Bulk and async:** search-lookalikes-bulk (async job up to 10,000); batch enrich jobs; lookup-companies 100 per call **Webhooks:** Views can carry a webhook\_notifications action that POSTs new insight alerts to an HTTPS URL; the create response returns an HMAC webhook\_secret exactly once. Alerts fire only for new insights from signal runs, not the existing backlog. Also listed under Enterprise managed integrations. Filter endpoints 15 endpoints Method Path What it does Cost GET `/api/v1/account/search-lookalikes` Lookalike companies from seed\_domains (1-10) and/or query, firmographic filters 1 credit per company returned POSTasync `/api/v1/account/search-lookalikes-bulk` Same search up to 10,000 results 1 credit per company returned, billed on completion; cancel caps spend GET `/api/v1/account/search-lookalikes-bulk/{job_id}` Poll + page bulk results (POST.../cancel to stop early) free GET `/api/v2/tech/companies` Companies whose recent job postings mention a technology CONFLICT: credits page says 0.5 credit per company; the endpoint's own response schema (CompaniesResponse.credits\_consumed) says 5 credits per company without enrichment and 10 with enrichment or any firmographic filter. Not testable (no key). Read credits\_consumed. POST `/api/v2/research/deep` Qualify one known company (activity + org structure) 1 charge per successful call at a per-workspace price (not published); 404 (domain unresolved) and calls with no findings are free POST `/api/v1/account/lookup-companies` Resolve up to 100 names/domains/LinkedIn URLs to canonical records free GET `/api/v1/account/firmographic-options` Accepted filter values (also GET /api/v2/tech/country-options) free GET `/api/v1/credits/balance` Allowance, consumed, remaining free POSTasync `/api/v2/signal/deploy/{type}` Deploy a long-running signal agent. 21 types: hiring-for-role, hiring-for-initiative, hiring-for-concepts, hiring-spike-\*, relative-hiring-spike-\*, first-hire-for-role, job-post-first-time-mention, people-hired-\*, job-change, tech-stack, tech-stack-first-mention, tech-stack-spike, tech-use-case, company-social-listening, people-social-listening, linkedin-engagement, linkedin-activity (competitor reps warming ICPs), trait-only not published; body accepts max\_credit\_limit to cap spend POST `/api/v1/account/get-account-list` List accounts found by signals/ICPs (plus POST /api/v2/account/batch, GET /api/v2/account/filters, POST /api/v2/account/filtered-accounts, GET /api/v1/account/{account\_id}/timeline) Not stated POSTasync `/api/v1/enrich/people` Enrich people with contact info (async job; also /enrich/account, /enrich/accounts, /enrich/fast-people-enrichment, /enrich/deep-enrich, /people/verify) not published (phones cost 'additional credits per phone found') POSTasync `/api/v1/crm/sync-accounts-job` Sync accounts (and /sync-people-job) to CRM; poll /crm/check-job-status Not stated GET `/api/v1/insights/alerts` Recent alerts for saved Views (Views CRUD at /api/v1/views) Not stated POST `/api/v1/icp/create` Create ICP (also /icp/list, /icp/update, /icp/options) Not stated POSTasync `/api/v1/enrich/accounts` Batch firmographic enrichment of company domains (async; poll GET /api/v1/enrich/accounts/{job\_id}) Not stated [](/) © 2026 ONEGTMLAB Private Limited. All rights reserved. COMPANY [ Why Us ](/#why-us)[ Process ](/#timeline)[ Blogs ](/blogs)[ About ](/about)[ Clients ](/clients)[ Free resources ](/free-resources)[ Newsletter ](/newsletter) Services [ GTM Engineering ](/ai-gtm-engineering)[ Account-Based Marketing ](/services/account-based-marketing)[ Paid Media ](/services/paid-media)[ Content Engineering ](/linkedin-personal-branding)[ RevOps ](/services/revops)[ SEO, AEO & GEO ](/services/seo-aeo-geo)[ All services ](/services) ![](/_astro/wordmark-3d.CMEfGdYr.svg)