ThousandBirds

Thousand Birds builds AI agents that are fully debuggable, offering a TypeScript runtime called Chidori. The platform records every LLM call, tool invocation, and side effect, enabling step‑by‑step replay of agent runs. Users can debug production failures, trace execution, and integrate with tools like Tael for observability. The open‑source project emphasizes deterministic agents, reproducible debugging, and seamless integration with modern AI workflows.

ThousandBirds is listed with 2 APIs on the APIs.io network. Tagged areas include Artificial Intelligence, Agents, Debugging, TypeScript, and Open Source.

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

ThousandBirds’ developer surface includes authentication, changelog, documentation, engineering blog, getting-started guide, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.5/100 emerging ▬ flat Agent 16/100 agent aware Heartbeat 54/100 slowing Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

2 APIs

Artificial Intelligence Agents Debugging TypeScript Open Source

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 19.5/100 · emerging

Contract Quality 2.2 / 21

Developer Ergonomics 6.1 / 17

Access Clarity 0.0 / 17

Operational Transparency 2.1 / 11

Contract Governance 2.2 / 10

Discoverability 4.6 / 9

Regulatory Posture 1.5 / 15

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 10.5 — up to +22.4 composite points Ask about this →
Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Developer Ergonomics scores 35.7 — up to +12.9 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/thousandbirds/apis.yml: open an issue on github.com/api-evangelist/thousandbirds 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 →

APIs 2

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

Chidori API

API for ThousandBirds' Chidori AI agent platform, providing debugging, tracing, and tool integration capabilities.

ThousandBirds API

ThousandBirds API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist (2026-10-19); not the provider's own document.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

ThousandBirds API Rules

10 rules · 8 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

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

ThousandBirds Authentication

1 scheme

SECURITY

ThousandBirds Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

Conventions

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Company 3

The organization behind the API

Website

Website

Blog

Blog

About

About

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: thousandbirds
name: ThousandBirds
description: Thousand Birds builds AI agents that are fully debuggable, offering a TypeScript runtime called Chidori. The
  platform records every LLM call, tool invocation, and side effect, enabling step‑by‑step replay of agent runs. Users can
  debug production failures, trace execution, and integrate with tools like Tael for observability. The open‑source project
  emphasizes deterministic agents, reproducible debugging, and seamless integration with modern AI workflows.
url: https://raw.githubusercontent.com/api-evangelist/thousandbirds/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-19 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-10-19'
modified: '2026-10-19'
tags:
- Artificial Intelligence
- Agents
- Debugging
- TypeScript
- Open Source
tags_raw:
- AI
- Agents
- Debugging
- TypeScript
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/thousandbirds-rules.yml
- type: Vocabulary
  url: vocabulary/thousandbirds-vocabulary.yml
- type: Conventions
  url: conventions/thousandbirds-conventions.yml
- type: Authentication
  url: authentication/thousandbirds-authentication.yml
- type: Conformance
  url: conformance/thousandbirds-conformance.yml
- type: Hosts
  url: hosts/thousandbirds-hosts.yml
- type: Vendors
  url: vendors/thousandbirds-vendors.yml
- type: ChangeLog
  url: https://github.com/ThousandBirdsInc/chidori/releases
- type: DomainSecurity
  url: security/thousandbirds-domain-security.yml
- type: Website
  url: https://thousandbirds.ai/
- type: Documentation
  url: https://thousandbirds.ai/docs
- type: Blog
  url: https://thousandbirds.ai/blog
- type: GitHubOrganization
  url: https://github.com/ThousandBirdsInc
- type: GettingStarted
  url: https://thousandbirds.ai/docs/quickstart
- type: About
  url: https://thousandbirds.ai/about
apis:
- name: Chidori API
  description: API for ThousandBirds' Chidori AI agent platform, providing debugging, tracing, and tool integration capabilities.
  humanURL: https://docs.thousandbirds.ai/
  baseURL: null
  aid: thousandbirds:chidori-api
- aid: thousandbirds:thousandbirds-api
  name: ThousandBirds API
  description: 'ThousandBirds API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist
    (2026-10-19);

    not the provider''s own document.'
  humanURL: https://docs.thousandbirds.ai/quickstart
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/thousandbirds-openapi-generated.yml
    x-provenance: generated
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: Documentation pages are rendered via JavaScript and no machine‑readable OpenAPI spec was found.
  evidence:
  - url: https://docs.thousandbirds.ai/quickstart
    status: 200
  checked: '2026-10-19'
x-enrichment:
  date: '2026-10-19'
  status: enriched
  artifacts_added: 13
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

ThousandBirds API — frequently asked questions

Does ThousandBirds have an API?

Yes. APIs.io lists 2 APIs from ThousandBirds, including Chidori API and ThousandBirds API.

Is there an OpenAPI specification for the ThousandBirds API?

Yes. APIs.io indexes 1 OpenAPI specification for ThousandBirds, each linked for download from this page.

How do I authenticate with the ThousandBirds API?

ThousandBirds uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as ThousandBirds Authentication.

Is the ThousandBirds API ready for AI agents?

ThousandBirds has a Kin Score of 19.5 out of 100 (emerging) and an Agent Readiness score of 15.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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