SourcePost

SourcePost is a directory for AI agents, providing a searchable catalog of suppliers, services, APIs and data sources that agents need to accomplish tasks. The platform offers an open API allowing agents to query listings without authentication, supporting up to 60 requests per minute. Listings are curated and reviewed, with sponsored entries clearly marked. The service does not require user accounts, cookies, or trackers.

SourcePost publishes 3 API contracts indexed on the APIs.io network, including Interest API, Listings API, and 1 more. Tagged areas include Artificial Intelligence, Directory, Suppliers, Data, and Agents.

The SourcePost catalog on APIs.io includes 1 Spectral governance ruleset.

SourcePost’s developer surface includes documentation, API reference, getting-started guide, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.2/100 thin Agent 35/100 agent ready Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessOpen

1 published contract 1 Agent Skills

Artificial Intelligence Directory Suppliers Data Agents

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 36.2/100 · thin

Contract Quality 9.9 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 3.6 / 17

Operational Transparency 2.3 / 11

Contract Governance 2.2 / 10

Discoverability 5.3 / 9

Regulatory Posture 4.0 / 15

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 46.8 — up to +13.3 composite points
Developer Ergonomics scores 35.0 — up to +13.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/sourcepost/apis.yml: open an issue on github.com/api-evangelist/sourcepost to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

SourcePost API

SourcePost is a directory where AI agents find suppliers, services and data sources for their task.

SourcePost Interest API

The interest API from SourcePost — 1 operation(s) for interest.

SourcePost Listings API

The listings API from SourcePost — 2 operation(s) for listings.

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

sourcepost

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Sourcepost Rate Limits

2 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

SourcePost API Rules

49 rules · 47 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sourcepost Authentication

0 schemes

SECURITY

Sourcepost Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sourcepost Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sourcepost Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

DataModel

Spectral

Vocabulary

ErrorCatalog

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: sourcepost
name: SourcePost
description: SourcePost is a directory for AI agents, providing a searchable catalog of suppliers, services, APIs and data
  sources that agents need to accomplish tasks. The platform offers an open API allowing agents to query listings without
  authentication, supporting up to 60 requests per minute. Listings are curated and reviewed, with sponsored entries clearly
  marked. The service does not require user accounts, cookies, or trackers.
url: https://artifacts.apis.io/sourcepost/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-02 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: medium
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-11-02'
modified: '2026-11-02'
tags:
- Artificial Intelligence
- Directory
- Suppliers
- Data
- Agents
tags_raw:
- AI
- Directory
- Suppliers
- APIs
- Data
- Agents
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DataModel
  url: data-model/sourcepost-data-model.yml
- type: AgenticAccess
  url: agentic-access/sourcepost-agentic-access.yml
- type: RateLimits
  url: rate-limits/sourcepost-rate-limits.yml
- type: Spectral
  url: rules/sourcepost-rules.yml
- type: Vocabulary
  url: vocabulary/sourcepost-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/sourcepost-problem-types.yml
- type: Conformance
  url: conformance/sourcepost-conformance.yml
- type: LLMsTxt
  url: llms/sourcepost-llms.txt
- type: Hosts
  url: hosts/sourcepost-hosts.yml
- type: DomainSecurity
  url: security/sourcepost-domain-security.yml
- type: Website
  url: https://sourcepost.dev
- type: Documentation
  url: https://sourcepost.dev/docs
- type: APIReference
  url: https://sourcepost.dev/openapi.json
- type: GettingStarted
  url: https://sourcepost.dev/docs
- type: TermsOfService
  url: https://sourcepost.dev/legal?lang=en
- type: PrivacyPolicy
  url: https://sourcepost.dev/privacy?lang=en
apis:
- name: SourcePost API
  description: SourcePost is a directory where AI agents find suppliers, services and data sources for their task.
  humanURL: https://sourcepost.dev/docs
  baseURL: https://sourcepost.dev
  OpenAPI:
    url: openapi/sourcepost-openapi.json
    name: OpenAPI (provider-hosted)
  aid: sourcepost:sourcepost-api
- aid: sourcepost:sourcepost-interest-api
  name: SourcePost Interest API
  description: The interest API from SourcePost — 1 operation(s) for interest.
  humanURL: https://sourcepost.dev/docs
  baseURL: https://sourcepost.dev
  tags:
  - Interest
  tags_raw:
  - interest
  properties:
  - type: OpenAPI
    url: openapi/sourcepost-interest-api-openapi.yml
- aid: sourcepost:sourcepost-listings-api
  name: SourcePost Listings API
  description: The listings API from SourcePost — 2 operation(s) for listings.
  humanURL: https://sourcepost.dev/docs
  baseURL: https://sourcepost.dev
  tags:
  - Listings
  tags_raw:
  - listings
  properties:
  - type: OpenAPI
    url: openapi/sourcepost-listings-api-openapi.yml
x-submission-notes: OpenAPI 4 paths
x-submitted-by: services@sourcepost.dev (apis.io/add, 2026-11-02)
x-enrichment:
  date: '2026-11-02'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

SourcePost API — frequently asked questions

Does SourcePost have an API?

Yes. APIs.io lists 3 APIs from SourcePost, including SourcePost API, SourcePost Interest API and SourcePost Listings API.

Is there an OpenAPI specification for the SourcePost API?

Yes. APIs.io indexes 2 OpenAPI specifications for SourcePost, each linked for download from this page.

How do I authenticate with the SourcePost API?

SourcePost documents its authentication (0 schemes). The details are profiled on APIs.io as Sourcepost Authentication.

Is the SourcePost API ready for AI agents?

SourcePost has a Kin Score of 36.2 out of 100 (thin) and an Agent Readiness score of 35.2 (agent-ready), scored by API Evangelist on 2026-11-02.

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